Corrosion Resistance | Extreme bolt

Category Archives: Corrosion Resistance

What Is PREN?

Posted on November 14, 2024 by Kathleen

Q: Is there a way to actually measure the corrosion resistance of Duplex stainless steel bolts? I’m trying to better understand their resistance compared to the 316 I’m currently using. A: Yes there is an actual calculation you can use called PREN. PREN takes into account the elemental makeup of an alloy … Continue reading →

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PREN and Nickel Alloys

Posted on November 14, 2024 by Kathleen

Q: I’m trying to determine the corrosion resistance of Hastelloy bolts compared to Duplex bolts. Can I use PREN to calculate the corrosion resistance between the two materials? A: Unfortunately, PREN is a calculation that is only applicable to stainless steels. It cannot be used on nickel alloys like Hastelloy or … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Calculating bolt corrosion, calculating bolt corrosion with PREN, calculating screw corrosion, calculating screw corrosion with PREN, can PREN be used for HASTELLOY, Can PREN be used on Nickel alloys, Can PREN calculate hastelloy corrosion, Can PREN calculate inconel corrosion, Can PREN calculate nickel alloy corrosion, Fastener corrosion with PREN, PREN, PREN corrosion calcualtion stainless steel, PREN corrosion calculation, PREN corrosion calculation for bolts, PREN corrosion calculation for fasteners, PREN corrosion calculation for screws, PREN stainless steel corrosion calculator, stainless steel bolt corrosion calculator, Stainless steel corrosion calculator, stainless steel screw corrosion calculator | Leave a comment

C276 and Titanium Bolts for NaOCl Bleach

Posted on October 10, 2024 by Kathleen

Q: I’m looking for replacements for m6 SS bolts on the head of a pump that pumps 12.5% NaOCl (bleach or sodium hypochlorite). The bolts tend to loosen over time and the bleach weeps out and destroys the A4 SS bolts. The operating temperature is about 80-90 F most of the … Continue reading →

Hastelloy Bolts Used in H2SO4

Posted on March 18, 2024 by Kathleen

Q: We are in search for a bolt material that can handle sulfuric acid – compatible with 96% H2SO4. The exposure should be low and only on an infrequent basis. Also, these applications when H2SO4, DI Water is used to flush and clean off the surfaces during any maintenance that occurs inside the … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Hastelloy bolts in H2SO4, Hastelloy C276 bolts for H2SO4, Hastelloy C276 bolts in H2SO4, Hastelloy C276 for H2SO4, Hastelloy C276 in H2SO4, Hastelloy C276 screws for H2SO4, Hastelloy C276 screws in H2SO4, Hastelloy in H2SO4, Hastelloy screws in H2SO4 | Leave a comment

High Temp Bolts for Marine Engine Exhaust

Posted on March 11, 2024 by Kathleen

Q: I’m looking to source high temperature nuts, bolts and washers for a marine engine exhaust system with a continuous temperature rating of 600C. Is there a material that can handle the temps and corrosion? A: Probably the best material you could have at 600C in a marine environment would be … Continue reading →

Monel 400 Bolts per ASTM B164

Posted on February 7, 2024 by Kathleen

Q: What does the spec ASTM B164 apply to and can you produce hex heads per this spec? I believe it is for Monel bolts? A: Monel bolts per ASTM B164 applies to both Monel 400 and Monel grade 405. This specification standardizes the different processing techniques for each of these materials … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners | Tagged Alloy 400 bolts per ASTM B164, Alloy 400 fasteners per ASTM B164, Alloy 400 per ASTM B164, Alloy 400 screws per ASTM B164, Monel 400 bolts per ASTM B164, Monel 400 fasteners per ASTM B164, Monel 400 screws per ASTM B164, Monel bolts per ASTM B164, Monel fasteners per ASTM B164, Monel per ASTM B164, Monel screws per ASTM B164 | Leave a comment

MIL-DTL-25027 for Lock Nuts

Posted on January 30, 2024 by Kathleen

Q: Can you provide me the dimension specs of an MIL-DTL-25027 5/8″-11 Monel 400 nut? A: MIL-DTL-25027 (superseded by spec NASM25027) focuses on the performance criteria of the locking mechanism of the nut. This spec isn’t for the dimensions/configuration of the nut.

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners | Tagged MIL-DTL-25027 dimensions, MIL-DTL-25027 lock nuts, MIL-DTL-25027 nuts, MILDTL25027 lock nuts, Monel MIL-DTL-25027 lock nuts, Monel NASM25027 lock nuts, Monel NASM25027 nuts, NASM25027 lock nuts, NASM25027 nuts | Leave a comment

Galling Issues with Inconel and Hastelloy

Posted on January 2, 2024 by Kathleen

Q: How do Alloy 625 and Hastelloy C276 bolts work together as far as galling goes? A: Inconel 625 bolts and Hastelloy bolts should work well together. They have slightly different chemistries, which helps minimize galling. In addition, Inconel is a bit harder than Hastelloy, which also helps. As long as … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Hastelloy and Inconel galling, Hastelloy bolts galling with Inconel bolts, Hastelloy galling, Hastelloy galling with inconel, Hastelloy screws galling with Inconel screws, Inconel and Hastelloy galling, Inconel bolts galling with Hastelloy bolts, Inconel galling, Inconel galling with hastelloy, Inconel screws galling with Hastelloy screws | Leave a comment

How to Prevent Thread Galling

Posted on October 2, 2023 by Kathleen

Q: I think my bolts are galling to the heat exchanger I’m working with because now they won’t budge at all. Guessing I will have to break them to get them out. I don’t want to have this keep happening – so is there any way to prevent this from happening in … Continue reading →

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Materials Prone to Thread Galling

Posted on October 2, 2023 by Kathleen

Q: I’ve had trouble with galling in the past and seem to be wasting a lot of bolts, due to this. I’ thinking maybe that I’m using the wrong material – so are there specific materials better than others to help prevent galling? A: Though galling can happen with almost any … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged best materials for thread galling, materials prone to fastener galling, materials prone to galling, materials prone to thread galling, what materials are less likely to gall, what materials are prone to fastener galling, what materials are prone to galling, what materials are prone to thread galling, which materials will experience thread galling | Leave a comment

What is Thread Galling?

Posted on October 2, 2023 by Kathleen

Q: I’ve heard of thread galling but am not exactly sure what it is. Can you explain? A: Galling happens when a bolt is over-tightened and the threads seize together creating what we call a “cold weld”. The friction from fastening actually causes the threads to heat up and … Continue reading →

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Difference between Galvanic Corrosion & Galling

Posted on September 7, 2023 by Kathleen

Q: Are galvanic corrosion and galling the same? A: Galvanic corrosion and galling are actually very different. One causes accelerated corrosion while the other cause the threads to seize. Galvanic corrosion is when two dissimilar metals are brought in contact with a solution or moisture – most commonly, salt water. … Continue reading →

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Maximum Temperature for Duplex /1.4462 Screws in Saltwater

Posted on June 1, 2023 by Kathleen

Q: At what temperature is it safe to use 1.4462 Duplex Stainless Steel Screws in seawater? A: 1.4462 Duplex stainless steel comes under several material and trade names including, 2205, UNS S32205, UNS S31803, F51, AISI 318 LN. It is normally safe to use duplex stainless bolting in brine / saltwater up … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged 1.4462 bolts for saltwater, 1.4462 bolts in Saltwater, 1.4462 bolts in seawater, 1.4462 Fasteners in Saltwater, 1.4462 saltwater bolts, 1.4462 saltwater screws, 1.4462 Screws for saltwater, 1.4462 Screws in Saltwater, 1.4462 Screws in seawater | Leave a comment

Hastelloy C22 Compared C276 in Hydrochloric Acid

Posted on May 22, 2023 by Kathleen

Q: I have a maintenance shut-down and am looking into replacing the 2.4602 / Hastelloy C22 bolts and nuts in. To save time, I was thinking of using Hastelloy C276 / 2.4819 fasteners since I’m hoping to get stock parts. My medium is mainly hydrochloric acid approximately 20%. Would 2.4819 bolts … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged 2.4602 bolts for HCl, 2.4602 bolts for Hydrochloric acid, 2.4602 screws for HCl, 2.4602 screws for hydrochloric acid, 2.4819 bolts for HCl, 2.4819 bolts for hydrochloric acid, 2.4819 for HCL, 2.4819 screws for HCl, 2.4819 screws for hydrochloric acid, C22 bolts for HCl, C22 bolts for Hydrochloric acid, C22 for HCl, C22 screws for HCl, C22 screws for hydrochloric acid', UNS N06022 bolts for HCL, UNS N06022 bolts for Hydrochloric acid, UNS N06022 screws for HCl, UNS N06022 screws for hydrochloric acid | Leave a comment

Titanium Bolts & 316 Stainless – Galvanic Corrosion Risk

Posted on April 13, 2023 by Kathleen

Q: I would like to use titanium alloy (Grade 5 / Ti6AL4V / 3.7164 / 3.7165) fasteners in combination with stainless steel (Grade 316L / 1.4404). The titanium alloy screws offer higher strengths than Stainless steel. Is it safe or is there a risk of galvanic corrosion? A: Titanium and … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged 316 galvanic corrosion, galvanic corrosion in titanium and 316, galvanic corrosion in titanium and stainless steel, galvanic corrosion in titanium bolts and 316, galvanic corrosion in titanium bolts and stainless steel, galvanic corrosion in titanium screws and 316, galvanic corrosion in titanium screws and stainless steel, Stainless steel galvanic corrosion, titanium and 316 galvanic corrosion, titanium bolts and stainless steel galvanic corrosion, Will titanium bolts and 316 corrode, will titanium screws and 316 galvanic corrode | Leave a comment

Comparing Monel and Inconel

Posted on April 13, 2023 by Kathleen

Q: What is the difference between Inconel and Monel? A: Both Monel and Inconel are nickel alloys but that is where the similarity ends. Briefly, Monel bolts are mostly used for saltwater corrosion resistance and high strength. They also offer excellent resistance to HF (hydrofluoric acid). Inconel is known for … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged Are monel bolts different than Inconel, Are monel bolts similar to inconel, Are monel screws different than inconel, Are monel screws similar to inconel, Can I substitute inconel for monel, Can I substitute monel for inconel, How does inconel compare to monel, How does monel compare to inconel, Is inconel different than monel, Is monel different than inconel, What is the difference between inconel and monel, What is the difference between monel and inconel | Leave a comment

Advantages of Monel Bolts

Posted on April 12, 2023 by Kathleen

Q: What are the advantages of Monel metal? A: Monel bolts are a nickel alloy that offers many advantages. Monel bolts are extremely saltwater corrosion resistant. Monel can provide years of seawater service without corroding. Monel offers high strength, with K500 offering double the strength of Monel grade 400. Monel … Continue reading →

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Can Monel Bolts Rust?

Posted on April 12, 2023 by Kathleen

Q: Is Monel rust proof? A: Monel is one of the primary materials we recommend for saltwater corrosion resistance. Monel bolts are also the go-to material by the navy for marine and seawater conditions. In terms of water, saltwater and sea air, Monel is very corrosion resistant – so it … Continue reading →

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Disadvantages of Monel Bolts

Posted on April 12, 2023 by Kathleen

Q: What are the disadvantages of Monel? A: The primary use of Monel bolts is for saltwater corrosion resistance as well as high strength. Monel bolts are typically not used for harsh acids, with the exception of hydrofluoric acid – where they outperform almost any material, even pure tantalum.

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged What are the disadvantages of Monel, What are the disadvantages of Monel bolts, What are the disadvantages of Monel screws | Leave a comment

Monel Compared to Titanium

Posted on April 12, 2023 by Kathleen

Q: Is Monel better than titanium? A: Monel bolts and Titanium bolts have both similarities and differences. Both materials offer excellent resistance to saltwater. The only difference would be that Titanium has a slight advantage in stagnant seawater which can cause some corrosion to Monel. Both are the top materials … Continue reading →

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Monel Bolts Compared to Stainless Steel

Posted on April 12, 2023 by Kathleen

Q: Is Monel better than stainless steel? A: Monel bolts will offer improved resistance to saltwater over stainless steel. As a nickel alloy, Monel will provide much better general corrosion resistance as well. Monel is also known for its unmatched resistance to hydrofluoric acid which will even corrode pure tantalum. … Continue reading →

Monel Bolts

Posted on April 12, 2023 by Kathleen

Q: What is a Monel Bolt? A: Monel bolts are made of Nickel copper alloy known as Monel. They can also be referred to as Alloy 400 bolts or Alloy K500 bolts depending on the grade. Monel bolts come mainly in two grades Monel 400 and Monel K500. Both offer … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged Are monel bolts corrosion resistant, Are monel screws corrosion resistant, Is monel corrosion resistant, What is a monel 400 bolt, What is a monel 500 bolt, What is a Monel bolt?, Where can I buy monel bolts, Where can I guy monel screws, Who makes monel bolts, Who makes monel screws, Who sells monel bolts, Who sells Monel screws | Leave a comment

Differences between Inconel and Hastelloy

Posted on March 29, 2023 by Kathleen

Q: What is the difference between Inconel and Hastelloy? A: Inconel bolts and Hastelloy bolts have similarities as well as differences. Inconel is focused on high temperatures with different grades focusing on strength, corrosion resistance and high temp oxidation resistance. Hastelloy C276 bolts are most commonly used for the resistance … Continue reading →

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Is Hastelloy Better Than Inconel?

Posted on March 27, 2023 by Kathleen

Q: Which is the best material Hastelloy or Inconel? A:Though Hastelloy C276 bolts and Inconel 625 bolts do feature some similarities, they are different – and often used for different applications – so one is not BETTER than the other. Generally speaking Hastelloy bolts offer slightly superior corrosion resistance to … Continue reading →

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Can Inconel Bolts Rust

Posted on March 27, 2023 by Kathleen

Q: Does Inconel rust? A: Inconel bolt grades 625 and 718 are not only used for the unique high strength / high temperature properties, but they also offer excellent corrosion resistance, almost comparable to Hastelloy. This means Inconel bolts won’t rust or corrode in many harsh chemicals, and acids, and … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Can Inconel Bolts Rust, Can Inconel Fastenrs Rust, Can Inconel Rust, Can Inconel Screws Rust, Do Inconel Bolts Rust, Do Inconel fasteners Rust, Do Inconel Screws Rust, Does Inconel Rust | Leave a comment

What Makes Inconel Break or Crack

Posted on March 24, 2023 by Kathleen

Q: Does Inconel crack? A: Any material can crack under the wrong conditions. This would typically happen if you expose the Inconel bolts for the following situations: 1. Corrosive materials or concentrations of corrosive materials outside their capabilities. 2. Temperatures that would exceed their maximum usable temperature. This may not … Continue reading →

Which is Best? Inconel or Titanium

Posted on March 24, 2023 by Kathleen

Q: Is Inconel better than titanium? A: Inconel and titanium bolts are completely different classes of materials. Inconel bolts are known for their high temperature and high strength properties. Inconel 600, 625 and 718 are considered nickel alloys and are inherently very corrosion resistant to strong acid media. Titanium screws are known … Continue reading →

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Who manufactures Inconel bolts?

Posted on March 23, 2023 by Kathleen

Q: Do you know who manufactures Inconel Bolts and Inconel Screws? A: Extreme Bolt & Fastener is one of the suppliers Domestic and International providers of Inconel bolts, screws, studs, nuts, threaded rods and other fasteners. Extreme Bolt & Fastener offers Inconel fasteners in Inconel 718, Inconel 625, Inconel 600 … Continue reading →

Titanium Bolts for Strength of Grade 8 in Saltwater

Posted on March 7, 2023 by Kathleen

Q: We have a fastener application requiring the strength of a Grade 8 bolt (per SAE J429) and the corrosion resistance equivalent of 316 SS (or better). This fastener will be exposed to a marine environment, so corrosion resistance is critical. A: If you application requires the strength of Grade … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged Titanium Grade 5 Bolts for saltwater strength, Titanium Grade 5 bolts for strength in saltwater, Titanium Grade 5 for Saltwater Strength, Titanium Grade 5 for strength in saltwater, Titanium Grade 5 Screws for saltwater strength, Titanium Grade 5 screws for strength in saltwater | Leave a comment

When does galvanic corrosion happen?

Posted on February 23, 2023 by Kathleen

Q: I want to use Duplex bolts to bolt down a Monel plate. Will these materials be compatible? A: When you mean compatible, I’m assuming you are referring to galvanic corrosion. Galvanic corrosion is when two dissimilar metals create an electrochemical reaction and corrosion occurs. Duplex and Monel can experience … Continue reading →

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Uses for Titanium Screws

Posted on January 27, 2023 by Kathleen

Q: What are titanium screws used for? A: Titanium screws are excellent for many applications. They are often used for their excellent resistance to saltwater and chlorides. Titanium screws can service many decades in even polluted seawater and are resistant to both stagnant and rapidly moving oceans. Titanium is also … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged Uses for titanium bolts, Uses for titanium screws, what are titanium bolts used for, What are titanium fasteners used for, what are titanium screws used for, When should I use titanium bolts, When should I use titanium screws | Leave a comment

Disadvantages of Titanium Bolts

Posted on January 27, 2023 by Kathleen

Q: What are the disadvantages of titanium? A: That would depend on the application. Titanium bolts are ideal for high strength applications – especially when lightweight fasteners are needed. Titanium screws are also excellent in saltwater and chloride conditions – among the best materials for these corrosion issues. Titanium screws … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged Disadvantages of Titanium, Disadvantages of Titanium Bolts, Disadvantages of Titanium fasteners, Disadvantages of Titanium screws, Titanium bolt disadvantages, titanium bolt usage, Titanium bolt uses, Titanium bolts and acid, Titanium bolts in acid, Titanium disadvantages, Titanium in acid, Titanium screw disadvantages, titanium screw usage, Titanium screw uses, Titanium screws and acid, Titanium screws in acid, Uses for titanium bolts, Uses for titanium screws, When not to use titanium bolts, When not to use titanium screws | Leave a comment

Titanium Bolt Corrosion

Posted on January 27, 2023 by Kathleen

Q: Do titanium screws dissolve? A: When you mean dissolve, I’m assuming you mean corrode. That depends on the situation. Titanium bolts offer excellent corrosion resistance to saltwater, chlorides and certain acids. In those situations, they typically don’t corrode. Titanium bolts can corrode in the presence of strong acids. This … Continue reading →

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17-4PH in Saltwater

Posted on January 24, 2023 by Kathleen

Q: What heat treatment would you recommend for 17-4PH exposed to salt water? Can I use H900? A: H900 is susceptible to chloride stress corrosion cracking. 17-4 with salt exposure should be H1025 or higher. And, best practice it to use the highest heat treat temp that works for an … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners, Technical Questions | Tagged 17-4 for saltwater resistnace, 17-4 in saltwater, 17-4 saltwater corrosion resistance, 17-4 stress corrosion cracking, 17-4PH for saltwater resistance, 17-4PH in saltwater, 17-4PH saltwater resistance, 17-4PH stress corrosion cracking, 174PH in saltwater, H1025 for saltwater, H900 for saltwater | Leave a comment

Differentiating Nickel Alloys: Monel, Hastelloy & Inconel?

Posted on December 29, 2022 by Kathleen

Nickel alloys are known for their corrosion resistance, but each material has its own special focus. This newsletter gives a quick summary of the top grades. Monel: Saltwater…And Strength For years, Monel bolts have been the go-to material for saltwater resistance by the military. … Continue reading →

Posted in Application, Blog, Corrosion Resistance, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Difference between Hastelloy and Incone, Difference Between Hastelloy and Monel, Difference between Inconel and Hastelloy, Difference between Monel and Hastelloy, Difference between monel and Inconel, nickel alloys | Leave a comment

Inconel 718 per NACE Specs

Posted on December 8, 2022 by Kathleen

Q: What is the difference between Inconel 718 standard and NACE 718? A: NACE stands for the National Association of Corrosion Engineers. This group puts forth standards for corrosion resistant materials and when the NACE certification is asked for, the user is typically asking for NACE MR0175. Inconel 718 that meets … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged A286 bolts compared to Inconel 718 bolts, Inconel 718 NACE fasteners, Inconel 718 NACE screws, Inconel bolts per nace, Inconel NACE specs, Inconel screws per nace, NACE Inconel 718 bolts, NACE Inconel 718 fasteners, NACE Inconel 718 screws, NACE Inconel Bolts, NACE Inconel fasteners, NACE Inconel Screws | Leave a comment

Sulfuric Acid: Which Fastener Material is Best?

Posted on September 6, 2022 by Kathleen

Sulfuric Acid ( H2SO4 ) is one of the most widely used and important acids, being an essential component to many industries. Equally as important is selecting the right material to survive this environment. This newsletter will provide options. WHICH IS BEST? That depends on BOTH concentration and temperature – … Continue reading →

Grade 7 Titanium offers Edge on Corrosion

Posted on June 15, 2022 by Kathleen

Q: When do you use Titanium Grade 7 Bolts? A: Titanium grade 7 is similar in strength to grade 2 bolts but the material is alloyed with added palladium. This addition gives Titanium grade 7 bolts improved corrosion resistance in mineral acids and strong brines. This is ideal in salt … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Grade 7 titanium bolts, grade 7 titanium bolts for corrosion resistance, grade 7 titanium for corrosion resistance, Grade 7 titanium screws, grade 7 titanium screws for corrosion resistance | Leave a comment

Bolts Resistant to Hot Saltwater

Posted on June 15, 2022 by Kathleen

Q: Can titanium handle hot saltwater conditions? A: Both grade 2 and grade 5 titanium bolts can be used in temperatures as high as 500°F (260°C). Remember as heat increases this can affect the strength of the material: https://www.extreme-bolt.com/titanium-fasteners-flanges.html#Mechanical

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged corrosion resistanced to hot saltwater, hot saltwater corrosion resistance, resistance to hot saltwater, titanium bolts for resistance to hot saltwater, titanium screws for resistance to hot saltwater | Leave a comment

High Strength Monel K500 Compared to Titanium Grade 5

Posted on June 15, 2022 by Kathleen

Q: How does Monel K500 Compared to Titanium Grade 5? A: Both Monel bolts and titanium bolts offer excellent resistance to saltwater conditions. Titanium has just a slight edge on corrosion resistance to stagnant seawater compared to Monel – but this is minuscule. The main differences are strength and applications. … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged grade 5 titanium compared to Monel K500, Monel and Titanium for saltwater strength, Monel K500 compared to Grade 5 titanium, Monel K500 compared to titanium Grade 5, titanium grade 5 compared to Monel K500 | Leave a comment

Inconel vs Hastelloy for High Strength Corrosion

Posted on June 15, 2022 by Kathleen

Q: Can Hastelloy bolts provide high strength? A: Hastelloy C276 bolts can provide about 107ksi of strength. They are typically used for high temperature corrosion resistance. For corrosive applications where higher strength is needed, you may also want to consider Inconel 625. Inconel 625 bolts offer 144ksi of strength and … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged Inconel 625 bolts for high strength corrosion resistance, Inconel 625 for high strength corrosion resistance, Inconel 625 screws for high strength corrosion resistance, Inconel bolts for high strength corrosion | Leave a comment

Bolts for Boiling Sulfuric Acid

Posted on June 15, 2022 by Kathleen

Q: What fastener material is best for boiling sulfuric acid? A: Generally speaking, for 20-40% concentrations, Alloy 20 bolts will be the best bet for an economic solution. For all other concentrations in boiling H2SO4 you would have to use tantalum bolts, which can be costly. Though Hastelloy bolts work … Continue reading →

PVDF Screws for HCl (hydrochloric acid)

Posted on April 15, 2022 by Kathleen

Q: Am I right in understanding that polymer fasteners are chemically resistant? I know they are not nearly as strong or temperature resistant as a metal, but our temperatures are ambient so would this work for me? A: For HCl, you would want to consider PVDF polymer fasteners. These are … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, Material, Technical Questions | Tagged PVDF bolts for HCl, PVDF bolts for hydrochloric acid, PVDF fasteners for corrosion resistance, PVDF fasteners for HCl, PVDF fasteners for hydrochloric acid, PVDF for HCl, PVDF for hydrochloric acid, PVDF for hydrochloric acid corrosion, PVDF screws for corrosion resistance, PVDF screws for HCl, PVDF screws for hydrochloric acid | Leave a comment

Understanding QQ-N-286 and QQ-N-281

Posted on December 3, 2021 by Kathleen

Q: My customer is asking me for a hex head that is QQ-N-286 per MIL Spec. Do you know what he is asking for? I’m confused. A: Yes we can help. First let’s look at the QQ-N-286. This refers to material Monel K500. Monel is a nickel alloy used for … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged bolt per QQ-N-281, bolt per QQ-N-286, bolt per QQN281, bolt per QQN286, bolts per QQ-N-281, bolts per QQ-N-286, bolts per QQN286, Monel Bolt per QQ-N-281, Monel Bolt per QQ-N-286, Monel per QQ-N-281, Monel per QQ-N-286, Monel screw per QQ-N-281, Monel screw per QQ-N-286, QQ-N-281 bolts, QQ-N-281 screws, QQ-N-286 bolts, QQ-N-286 screws, QQN281, QQN281 bolts, QQN281 screws, QQN286 bolts, QQN286 screws, screw per QQ-N-281, screw per QQ-N-286, screw per QQN281, screw per QQN286, screws per QQ-N-281, screws per QQ-N-286, screws per QQN281, screws per QQN286 | Leave a comment

How does 316 Stainless Compares to Specialty Steel Alloys

Posted on November 1, 2021 by Kathleen

316 stainless is a familiar alloy to many of us and perhaps one of the most widely used fastening materials. Though it serves a critical function for industry, 316 can often fall short in servicing challenging high strength, temperature and corrosion resistant applications. Here is how it measures up in … Continue reading →

Titanium for Deep Stagnant Seawater

Posted on October 27, 2021 by Kathleen

Q: I have a deep sea marine application that requires saltwater resistance and tensile strength around 125ksi. In addition to the saltwater and strength parameters, I’m also dealing with waters that can be stagnant. Not sure if that makes a difference. Would Monel K500 be a good choice. A: Monel … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged Monel 500 bolts, Monel 500 screws, monel bolts compared to titanium bolts, monel bolts vs titanium bolts, Monel K500 bolts, Monel K500 bolts compared to Titanium Grade 5 Bolts, Monel K500 bolts vs Titanium Grade 5 Bolts, Monel K500 screws, Monel K500 screws compared to Titanium Grade 5 screws, Monel K500 screws vs Titanium Grade 5 screws, monel screws compared to titanium screws, monel screws vs titanium screws, Monel vs titanium bolts, Titanium for stagnant salt water, Titanium for stagnant salt water corrosion, Titanium for stagnant saltwater, Titanium for stagnant saltwater corrosion, Titanium for stagnant sea water, Titanium for stagnant seawater corrosion | Leave a comment

Titanium Hose Clamp for Chlorine Water Vapor

Posted on October 6, 2021 by Kathleen

Q: I’m looking for a clamp for a drinking water tank vent screen. We work with many tanks but this tank apparently has a higher chlorine residual so the 304SS worm drive clamps don’t last long. The clamp that we fabricated was a little too stiff so there were gaps … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged grade 2 titanium hose clamps, grade 2 titanium medium duty hose clamp, hose clamps for chlorine resistance, medium duty titanium hose clamp, titanium grade 2 hose clamps, titanium hose clamp for chlorine, titanium hose clamps, titanium medium duty hose clamp | Leave a comment

Making the Right Choice: Inconel 600, 601, 625 & 718

Posted on October 4, 2021 by Kathleen

Inconel bolts are a nickel alloy fastener that are known for their use in high temperature applications that also require high strength. Many grades are also used for their excellent level of corrosion resistance in harsh chemical environments. This brief newsletter highlights the unique attributes of each Inconel bolt … Continue reading →

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Hastelloy C276 vs Inconel 625 Bolts

Posted on October 4, 2021 by Kathleen

Q: What’s the difference between Hastelloy C276 and Inconel 625? A: C276 bolts have an edge in corrosion resistance on Inconel 625 bolts. Typically Hastelloy bolts are the go-to in many harsh chemical environments and offer improved resistance most notably in hydrochloric acid. Hastelloy is also renowned for their resistance … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged Hastelloy bolts compared to Inconel bolts, Hastelloy bolts vs Inconel bolts, Hastelloy C276 bolts compared to Inconel 625 bolts, Hastelloy C276 bolts vs. Inconel 625 bolts, Hastelloy C276 compared to Inconel 625, Hastelloy C276 screws compared to Inconel 625 screws, Hastelloy C276 screws vs. Inconel 625 screws, Hastelloy C276 vs. Inconel 625, Hastelloy compared to Inconel, Hastelloy fasteners compared to Inconel fasteners, Hastelloy fasteners vs. Inconel fasteners, Hastelloy screws compared to Inconel screws, Hastelloy screws vs Inconel screws, Hastelloy vs Inconel | Leave a comment

Nylon vs All Metal Lock Nuts

Posted on September 28, 2021 by Kathleen

Q: What is the difference between a Duplex nylon insert and all-metal lock nut? I’ll be using this in an offshore marine application for salt air resistance and strength. A: The main things to consider between an all metal and nylon insert lock nut is the temperature and the corrosive … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged All metal lock nuts, all metal locknuts, duplex all metal lock nuts, Duplex all metal locknuts, duplex lock nuts, Duplex locknuts, duplex nylon insert lock nuts, duplex nylon insert locknuts, duplex polymer insert lock nuts, Flexloc, flexloc lock nuts, flexloc locknuts, Lock nuts, Locknuts, Nylon insert lock nuts, nylon insert locknuts, stover lock nuts | Leave a comment

Coating Duplex Bolts for Sea Water – Is this needed?

Posted on July 14, 2021 by Kathleen

Q: We would like to purchase Duplex parts. Can you xylan coat and Zinc nickel Electroplate them since they will be used in sea water? A: It is not practical to coat a Duplex 2507 bolt as it is stainless steel and will not corrode in seawater. Duplex will provide great resistance to saltwater, … Continue reading →

PVDF Screws for Ultraviolet Radiation in Pharmaceutical Industry

Posted on July 7, 2021 by Kathleen

Q: I’m looking for a polymer fastener that can withstand ultraviolet radiation, but is also FDA approved as this is for a pharmaceutical application. Temperatures are around 100C. A: For this application, a good choice would be PVDF fasteners. PVDF screws are both FDA approved and are ideal for handling … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, High Temperature Resistance, Material, Technical Questions, Ultra Purity | Tagged PVDF bolt for ultraviolet radiation, PVDF bolts for ultraviolet radiation, PVDF screw for ultraviolet radiation, PVDF screws for ultraviolet radiation | Leave a comment

Comparing the Titanium Grades 2, 5, 7 and 12

Posted on June 23, 2021 by Kathleen

Q: I’m working on a project that is using Titanium bolts for our equipment and we are considering a few different sizes and grade bolts; we are considering Gr.2, Gr.5, Gr.7 and Gr.12. What would you typically specify as the maximum tensile allowable (i.e. 2/3*yield) and the maximum shear allowable … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged 5, 7 and 12, Comparing titanium grade 2 and 5 bolts, Comparing titanium grade 2 and 5 fasteners, Comparing titanium grade 2 and 5 screw, Comparing titanium grade 2 and 5 screws, Comparing titanium grades 2, Difference between titanium grades, Most corrosion resistant grade of titnaium, most corrosion resistant titanium, most economic titanium, Most economical grade of titanium, Strongest grade fo titnaium, strongest titanium | Leave a comment

The difference between MIL-DTL-1222 and MIL-S-1222

Posted on June 18, 2021 by Kathleen

Q: I have a customer who requested a Hastelloy bolt per MIL-DTL-1222. Is this something you can produce? A: Yes we can produce to this spec but first you should know that MIL-S-1222 has been superseded by MIL-DTL-1222. A Hastelloy bolt per MIL-DTL-1222 will cover MIL-S-1222 but the reverse is … Continue reading →

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Titanium Bolts & Galvanic Corrosion in Automobile

Posted on June 16, 2021 by Kathleen

Q: I’m using metric Grade 5 titanium bolts, washers and nuts for automotive application. Since the car will never be exposed to any salt water environments do I need to worry about galvanic corrosion? A: Galvanic corrosion is really only a problem if you have a liquid medium between the … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Titanium bolt for automotive application, Titanium bolt galvanic corrosion, Titanium bolts for automotive application, Titanium bolts galvanic corrosion, Titanium fastener galvanic corrosion, Titanium fastener or automotive application, Titanium fasteners for automotive application, Titanium fasteners galvanic corrosion, Titanium screw for automotive application, Titanium screw galvanic corrosion, Titanium screws for automotive application, titanium screws galvanic corrosion | Leave a comment

Titanium Gr 5 Bolts vs Super Duplex 2507 Bolts in Brackish Marine Environment

Posted on May 26, 2021 by Kathleen

Q: I’m dealing with a brackish marine environment where fresh and salt water combine. I need a strong bolt around 120ksi of tensile strength and have been using Titanium Grade 5, but they are quite expensive. I was wondering if there is a more economic alternative that can handle this … Continue reading →

Titanium, Monel & Hastelloy for 100% Salt-Saturated Brine Water

Posted on May 21, 2021 by Kathleen

Q: I am dealing with near 100% salt saturated brine water @ 195°F. I need material recommendations and price on threaded rod that will survive in that environment. A: Hello, with 100% saturated brine at near boiling temperatures of 195F there are a few materials that can work . Bolts … Continue reading →

Hastelloy & MR0175

Posted on May 18, 2021 by Kathleen

Q: I work on oil rig repair and we are required to have Hastelloy bolts that meet the NACE MR0175 standard. What is this exactly, and do you offer these? A: To answer the easy question, yes we offer Hastelloy screws per NACE MR0175. Now for the my involved question. … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged Hastelloy bolt per NACE MR0175, Hastelloy bolt per NACE MR0175 Hastelloy bolts per NACE MR0175, Hastelloy screw per NACE MR0175, Hastelloy screws per NACE MR0175, NACE MR0175 Hastelloy Bolt, NACE MR0175 Hastelloy Bolts, NACE MR0175 Hastelloy Screw, NACE MR0175 Hastelloy Screws | Leave a comment

Titanium Gr5 versus Monel K500 Bolts in Sea Water

Posted on May 18, 2021 by Kathleen

Q: I have a subsea application that is exposed to extremely rapid moving salt water. Not only is it faced with these corrosive conditions but it must also be strong – 150 ksi tensile strength – in order to withstand these rough waters and maintain the structure’s integrity. Can you … Continue reading →

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Inconel 625 for Oxidation Resistance and Acid Contamination

Posted on May 14, 2021 by Kathleen

Q: I have a process that is running at high temperatures that can fluctuate up to 1500F that requires not only oxidation resistance but also some chemical resistance contaminants. I had tried some C276 bolts for the stray acids but they don’t seem to be working mechanically…suggestions? A: A good … Continue reading →

Nickel 200 Compared to Hastelloy for Caustic Solution

Posted on May 14, 2021 by Kathleen

Q: I have a process utilizing a high concentration caustic solution of sodium hydroxide. Would C276 bolts be a good option for corrosion resistance. A: They could be a possibility but you might want to also consider Nickel 200. Nickel 200 bolts find their niche in corrosion resistance to caustic … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Nickel 200 bolt compare Hastelloy bolt for caustic soda, Nickel 200 bolt for caustic alkaline solutions, Nickel 200 bolt for sodium hydroxide, Nickel 200 bolts compare Hastelloy bolts for caustic soda, Nickel 200 bolts for caustic alkaline solutions, nickel 200 bolts for sodium hydroxide, Nickel 200 compare Hastelloy for caustic soda, Nickel 200 screw compare Hastelloy screw for caustic soda, Nickel 200 screw for caustic alkaline solutions, Nickel 200 screw for sodium hydroxide, Nickel 200 screws for caustic alkaline solutions, nickel 200 screws for sodium hydroxide, Nickel 200 vs Hastelloy for caustic soda | Leave a comment

Hastelloy for Formic Acid

Posted on May 12, 2021 by Kathleen

Q: We are a producer of a preservative agent for livestock feed. Our process requires the use of formic acid. Any suggestions on an anti-corrosive bolt that can handle this acid? A: For formic acid I would typically suggest Hastelloy C276 or Hastelloy C22 but it always depends on concentration … Continue reading →

Monel Bolt for Anodizing

Posted on May 10, 2021 by Kathleen

Q:We have an anodizing process that sends low voltage current through aluminum bars. We have been using 316 stainless bolts, but over time the electricity heats the bolts up red hot, then we lose clamping force. The tanks contain a solution of 15% sulfuric acid, so there is some corrosion … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners, Technical Questions | Tagged Monel Bolt for Anodizing, Monel Bolt for conductivity, Monel Bolts for Anodizing, Monel Bolts for conductivity, Monel Screw for Anodizing, Monel screw for conductivity, Monel Screws for Anodizing, Monel screws for conductivity | Leave a comment

Alloy 20 vs Duplex Zeron 100 Bolts

Posted on May 3, 2021 by Kathleen

Q: I was thinking of ordering some Duplex Zeron 100 bolts for some mild sulfuric acid. How does that compare to Alloy 20? My alloy 20 bolts are suffering some mild corrosion. A: Zeron bolts do offer a higher level of general resistance to corrosive environments compared to grades 2205 … Continue reading →

A286 Protection From High Temperatures or Corrosive Conditions?

Posted on May 3, 2021 by Kathleen

Q: I have an high temperature exhaust application that requires about 130ksi of tensile strength and is running pretty hot at 1000F. There are also some low concentration acidic contaminants that condense on the bolts during shutdowns, that have caused corrosion in the past on standard 316 bolting. Would A286 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged A286 bolt compared to 316 for corrosion, A286 bolt for oxidation corrosion, A286 bolt for oxidation resistance, A286 bolts compared to 316 for corrosion, A286 bolts for oxidation corrosion, A286 bolts for oxidation resistance, A286 compared to 316 for corrosion, A286 for oxidation corrosion, A286 for oxidation resistance, A286 screw compared to 316 for corrosion, A286 screw for oxidation corrosion, A286 screw for oxidation resistance, A286 screws compared to 316 for corrosion, A286 screws for oxidation corrosion, A286 screws for oxidation resistance | Leave a comment

Alloy 20 Bolts for Oxalic Acid

Posted on April 29, 2021 by Kathleen

Q: Please recommend a material for use in 80 deg C oxalic acid solution. The titanium I’m using suffers, and dissolves. My hope is that C276 may work. We do not need high mechanical strength. I’m looking to order M4 and M6 socket head cap screws. A: Probably the best … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged alloy 20 bolt for oxalic acid, alloy 20 bolts for oxalic acid, Alloy 20 for oxalic acid, Alloy 20 screw for oxalic acid, Alloy 20 screws for oxalic acid | Leave a comment

Duplex Bolts versus 304 /316 Stainless Steel

Posted on April 29, 2021 by Kathleen

Q: How does a Duplex screw compare to a stainless steel 300 series fastener? Would they be better in a saltwater environment? A: A Duplex stainless steel screw offers many advantages over 300 series stainless steel. Duplex is offered primarily in two grades Duplex 2205 and Super Duplex 2507 (with … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Duplex compared to 316, Duplex compared to 316 Stainless, Duplex Steel compared 316 Steel, Duplex steel compared to 300 series stainless, Duplex steel compared to 300 series stainless steel, Duplex steel compared to 316 stainless, Duplex Steel compared to 316 Steel, Duplex steel vs 300 series stainless, Duplex steel vs 300 series stainless steel, Duplex steel vs 300 series steel, Duplex steel vs 316 Stainless Steel, Duplex Steel vs 316 Steel, Duplex vs 316, Duplex vs 316 Stainless | Leave a comment

Hastelloy C276 Bolts versus Nickel 200 Bolts

Posted on April 15, 2021 by Kathleen

Q: Because Nickel 200 bolts have much higher nickel content than Hastelloy C276 does that mean they are more corrosion resistant than a Hastelloy bolt? A: No. Though nickel content plays a huge role in corrosion resistance, however there are other elements that contribute to the high level of corrosion … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Hastelloy bolt vs Nickel 200 bolt, Hastelloy bolts vs Nickel 200 bolts, Hastelloy screw vs Nickel 200 screw, Hastelloy screws vs Nickel 200 screws, Nickel 200 bolt, Nickel 200 bolt for caustic alkaline solutions, Nickel 200 bolt for caustic soda, Nickel 200 bolts, Nickel 200 bolts for caustic alkaline solutions, Nickel 200 bolts for caustic soda, Nickel 200 screw, Nickel 200 screw for caustic alkaline solutions, Nickel 200 screw for caustic soda, Nickel 200 Screws, Nickel 200 screws for caustic alkaline solutions, Nickel 200 screws for caustic soda | Leave a comment

Titanium Grade 5 versus Aluminum

Posted on April 14, 2021 by Kathleen

Q: What is the difference between using aluminum compared to a titanium bolt for a medical fastener? A: Medical grade titanium bolts – grade 5 – have an incredible strength to weight ratio. They are 60% denser than aluminum but more than twice as strong. This makes a titanium bolt … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged medical titanium bolt, medical titanium bolts, medical titanium screws, titanium bolt, titanium bolt for biocompatibility, Titanium Bolts, titanium bolts for biocompatibility, titanium grade 5 bolt, titanium grade 5 bolts, titanium grade 5 screw, titanium grade 5 screws, titanium screw, Titanium Screws, titanium screws for biocompatibility | Leave a comment

Choosing a Non-Magnetic Fastener

Posted on April 13, 2021 by Kathleen

Non-magnetic fasteners service a variety of applications mainly where magnetic “interference” needs to be avoided. Cryogenic and medical applications such as MRI’s are just a few of the key places non-magnetic fasteners are needed. This newsletter highlights a few specialty metal fasteners that can service non-magnetic needs. Inconel Bolts Non-magnetic … Continue reading →

Posted in Application, Blog, Corrosion Resistance, High Strength, High Temperature Resistance, Lightweight, Material, Specialty Metal Fasteners | Tagged non-magnetic aluminum bolt, non-magnetic aluminum bolts, non-magnetic aluminum screw, non-magnetic aluminum screws, non-magnetic bolt, non-magnetic bolts, non-magnetic Inconel bolt, non-magnetic Inconel bolts, non-magnetic Inconel screw, non-magnetic Inconel screws, non-magnetic metal bolt, non-magnetic metal bolts, non-magnetic metal screw, non-magnetic metal screws, non-magnetic screw, non-magnetic screws, non-magnetic titanium bolt, non-magnetic titanium bolts, non-magnetic titanium screw, non-magnetic titanium screws | Leave a comment

Super Duplex for Structural Project in Salt Air

Posted on April 12, 2021 by Kathleen

Q: I’m looking for a bolt that can handle salt air and be structurally sound with a tensile strength of about 115-120 ksi max – do I require a titanium grade 5 bolt because I know they are costly? A: Probably not at that tensile strength. A Super Duplex bolt … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged Super duplex bolt for salt air, Super Duplex bolt for saltwater, Super duplex bolts for salt air, Super Duplex bolts for saltwater, Super duplex fastemers for salt air, Super duplex fastener for salt air, Super Duplex fastener for saltwater, Super Duplex fasteners for saltwater, Super duplex screw for salt air, Super Duplex screw for saltwater, Super duplex screws for salt air, Super Duplex screws for saltwater | Leave a comment

Titanium Bolts for High Strength Chloride Application

Posted on April 12, 2021 by Kathleen

Q: I have a chlor alkali application that requires high strength of about 110ksi of tensile strength. Heat is not a factor but I’m concerned about the strength. Can you make any recommendations? A: For chlor alkali services one of the best materials is titanium. While a standard titanium grade … Continue reading →

A Duplex Bolt vs AL6XN in Saltwater

Posted on April 9, 2021 by Kathleen

Q: How does a Duplex bolt compare to AL6XN in a hot saltwater situation? A: Duplex bolts are ideal for chlorides and mild saltwater application such as brackish water, salt air and moderate temperature unpolluted seawater. An AL6XN bolt will provide more corrosion protection than a Duplex bolt in marine … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged AL6XN bolt for corrosion, AL6XN bolts for corrosion, AL6XN fastener for corrosion, AL6XN screw for corrosion, AL6XN screws for corrosion, Duplex bolt for corrosion, Duplex bolt for saltwater, Duplex bolt for seawater, Duplex bolts for corrosion, Duplex bolts for saltwater, Duplex bolts for seawater, Duplex fastener for saltwater, Duplex fastener for seawater, Duplex fasteners for saltwater, Duplex fasteners for seawater, Duplex screw for corrosion, Duplex screw for saltwater, Duplex screw for seawater, Duplex screws for corrosion, Duplex screws for saltwater, Duplex screws for seawater, Super Duplex bolt for corrosion, Super Duplex bolt for saltwater, Super Duplex bolt for seawater, super Duplex bolts for corrosion, Super Duplex bolts for saltwater, Super Duplex bolts for seawater, Super Duplex fastener for saltwater, Super Duplex fastener for seawater, Super Duplex fasteners for saltwater, Super Duplex fasteners for seawater, super duplex screw for corrosion, Super Duplex screw for saltwater, Super Duplex screw for seawater, super duplex screws for corrosion, Super Duplex screws for saltwater, Super Duplex screws for seawater | Leave a comment

Monel 500 Bolts for Hydrofluosilicic Acid

Posted on April 9, 2021 by Kathleen

Q: What is the best alloy to bolt to use in a flange on the outside Hydrofluosilicic acid storage tank? A: Probably the best materials for Hydrofluosilicic acid bolting would be a Monel K500 bolt. This material will give you the strength and good corrosion resistance to the this very … Continue reading →

Alloy 20 Bolts and Inconel Bolts for Downhole Oil Application

Posted on April 8, 2021 by Kathleen

Q: Hi there! I have a set screw in a downhole Oil and Gas application that is experiencing cam out/stripping and seeking a recommendation for a drop in replacement. With 17-4 and stainless steel, galling is a real issue for us. Also with the application being down-hole, if the screw … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 20 bolt for acid corrosion resistance, Alloy 20 bolt for corrosion resistance, Alloy 20 bolt for mild corrosion resistance, Alloy 20 bolts for acid corrosion resistance, Alloy 20 bolts for corrosion resistance, Alloy 20 screw for acid corrosion resistance, Alloy 20 screw for corrosion resistance, Alloy 20 screws for acid corrosion resistance, Alloy 20 screws for corrosion resistance, Inconel 625 bolt for corrosion resistance, Inconel 625 bolt for high temperature and strength, inconel 625 bolts for corrosion resistance, Inconel 625 bolts for high temperature and strength, inconel 625 screw for corrosion resistance, Inconel 625 screw for high temperature and strength, Inconel 625 screws for corrosion resistance, Inconel 625 screws for high temperature and strength, Inconel bolt for acid resistance, Inconel bolt for corrosion and high temperature, Inconel bolt for high strength, Inconel bolts for acid resistance, Inconel bolts for corrosion and high temperature, Inconel bolts for high strength, Inconel fastener for corrosion and high temperature, Inconel fasteners for corrosion and high temperature, Inconel screw for acid resistance, Inconel screw for corrosion and high temperature, Inconel screw for high strength, Inconel screws for acid resistance, Inconel screws for corrosion and high temperature, Inconel screws for high strength | Leave a comment

An Inconel 600 Bolt vs an Inconel 625 Bolt

Posted on April 8, 2021 by Kathleen

Q: Does Inconel 600 provide the same level of corrosion resistance as an Inconel 625 bolt? A: Not typically. For corrosion resistance, an Inconel 625 bolt is one of the more corrosion resistant versions of the Inconel alloys and it can withstand many strong hot acids. While not as corrosion … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners, Technical Questions | Tagged inconel 600 bolt for high temperature, Inconel 600 bolts for high temperature, inconel 600 fastener for high temperature, Inconel 600 fasteners for high temperature, inconel 600 screw for high temperature, Inconel 600 screws for high temperature, Inconel 625 bolt for corroion resistance, inconel 625 bolts for corrosion resistance, inconel 625 fastener for corrosion resistance, inconel 625 fasteners for corrosion resistance, inconel 625 screw for corrosion resistance, Inconel bolt for high temperature, Inconel bolts for high temperature, Inconel fastener for high temperature, inconel fasteners for high temperature, Inconel screw for high temperature, inconel screws for high temperature | Leave a comment

Hastelloy C276 Bolts for Hot Acids

Posted on April 7, 2021 by Kathleen

Q: I’m running a laboratory process that will be exposing bolts to a variety of acids. I’d like a metal bolt that can withstand low concentration hot acids. I was thinking a Hastelloy C276 bolt may be a good option. Are there any acids I should beware of that can … Continue reading →

Hastelloy and Inconel Bolts for High Temperature & Low Acidic Environments

Posted on April 1, 2021 by Kathleen

Q:We are currently using mild steel with a black oxide coating and the bolts are breaking down because they are stretching under tension because of the heat, and corrode in various places from our acids.The acids we use here are Hydrochloric (HCl) and Sulfuric (H2SO4), both are heavily diluted with … Continue reading →

Titanium vs Monel 400 for Polluted Stagnant Seawater

Posted on March 31, 2021 by Kathleen

Q: I’ve been using Monel 400 bolts for a coastal operation that is built in polluted, stagnant saltwater. I’m been having some slight corrosion – nothing drastic, but wanted to check if there was another material that would last longer. A: For this situation I would suggest titanium bolts. Titanium … Continue reading →

Hastelloy C276 vs. Hastelloy C22 Fasteners

Posted on March 25, 2021 by Kathleen

Q: What’s the difference between Hastelloy C276 and Hastelloy C22? A: Hastelloy C276 fasteners offer very good resistance to strong reducing corrosive acids, as well excellent stress corrosion cracking resistance and resistance to localized attack. They are renowned for their corrosion resistance to various concentrated, hot acids and reducing environments, … Continue reading →

Will A286 Fasteners Gall with Titanium or Stainless

Posted on March 15, 2021 by Kathleen

Q: I want to use A286 fasteners with our product (a force sensor). Will A286 gall with 6Al4V titanium or 15-5 stainless steel or 304 SS helicoils without lubrication. The customer will not allow lubricants. Thank you A: The biggest factor to galling is using similar material on each other. … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Technical Questions | Tagged A286 Galling, Will A286 Gall with 15-5, Will A286 Gall with 304 Stainless Steel, Will A286 Gall with Stainliess Steel, Will A286 Gall with Titanium | 1 Comment

Bleach Plant: Titanium vs Hastelloy C276

Posted on February 24, 2021 by Kathleen

Q: We need bolts for a shutdown in our Bleach Plant where Chlorine Dioxide is the attacking agent. Is titanium sufficient or should we be using C276 bolts? A: Titanium bolts are typically more than sufficient. Titanium fasteners are renowned for their resistance to chlorides and chlorines – they are … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Titanium bolts for bleach corrosion, Titanium bolts for bleach plant, Titanium bolts for chlorine dioxide corrosion, titanium fasteners for bleach corrosion, Titanium fasteners for bleach plant, Titanium fasteners for chlorine dioxide corrosion, Titanium screws for bleach corrosion, Titanium screws for bleach plant, Titanium screws for chlorine dioxide corrosion | Leave a comment

Nickel 200 Gaskets for Cyrogenic Applications

Posted on January 15, 2021 by Kathleen

Q:Hi, I’m interested in the JG/JP gasket for a cryogenic application. Can you recommend a material with the highest ductility as I’m concerned about the gasket becoming too brittle? A: To protect your process from loss of ductility, I would suggest using a combination of 316 SS and Graphite for … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged cryogenic gaskets, cyro gaskets, gaskets for cryo applications, gaskets for cryogenic applications, nickel 200 gaskets for cryo applications, nickel 200 gaskets for cryogenic applications, nickel gaskets for cryo applications | Leave a comment

Flanges for High Pressure Sulfuric Acid

Posted on December 21, 2020 by Kathleen

Q: I have a high pressure application that exposes my flanges to sulfuric acid? Can you suggest the best flange and material for this situation? A: For high pressure applications weld neck flanges have a beveled end that, when connected to a pipe, creates a trough for a strong weld … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged corrosion resistant weld neck flange, flange for sulfuric acid, hastelloy corrosion resistant flange, hastelloy flange, hastelloy flange for sulfuric acid, Hastelloy weld neck flange, inconel corrosion resistant flange, inconel flange, inconel flange for sulfuric acid, inconel weld neck flange, tantalum corrosion resistant flange, tantalum flange, tantalum flange for sulfuric acid, tantalum weld neck flange, weld neck flange for sulfuric acid, zirconium corrosion resistant flange, zirconium flange, zirconium flange for sulfuric acid, zirconium weld neck flange | Leave a comment

Gasket Degradation by Exposure to the Process Media

Posted on December 18, 2020 by Kathleen

Q: Do I need to consider using internal baffles around my nozzles to protect the gaskets from radiation and gas flow? A: With the Revoseal gaskets, there is no need to incorporate baffles into your nozzle designs, since the unique metallic gasket design isolates the graphite or PTFE sealing materials … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Technical Questions | Tagged gasket baffle, high corrosion metallic gasket, metallic gasket, metallic gasket for corrosion resistance, metallic gasket for high corrosion, revoseal gasket | Leave a comment

Flanges for Saltwater

Posted on December 16, 2020 by Kathleen

Q: I need a high strength salt water resistant flange for a naval application. Will be in rapidly moving seawater. A: Here I would suggest a Monel K500 flange. Monel K500 is extremely strong as it is age hardened. It offers 160 ksi of ultimate tensile strength. Also Monel flanges … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged Flanges for salt water, flanges for saltwater, flanges for sea water, flanges for seawater, monel flanges for salt water, monel flanges for saltwater, monel flanges for sea water, monel flanges for seawater, monel k500 flanges for salt water, monel K500 flanges for saltwater, monel K500 flanges for sea water, monel K500 flanges for seawater | Leave a comment

Salt Corrosion Resistant Titanium Gaskets

Posted on November 25, 2020 by Kathleen

JPLeakRate Q: I’m using a spiral wound gasket and am having difficulties with leakage. Can you recommend something that can protect against leakage and handle a harsh salt-rich corrosive environment? A: For this type of application I would recommend a titanium or Titanium JG / JP gasket. This style of gasket … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged chloride corrosion resistant gasket, corrosion resistant gasket, Gasket better than spiral wound, leak proof gasket, leak resistant gasket, low leak rate gasket, Lowest Leak Rate Gasket, salt corrosion resistant gasket, titanium corrosion resistant gasket, titanium gasket, titanium gasket better than spiral wound, Titanium JG / JP Gasket, Titanium leak proof gasket | Leave a comment

PEEK Threaded Rod for Hydrochloric Acid Resistance

Posted on November 18, 2020 by Kathleen

Q: I’m looking for threaded rods and nuts that would need to be able to withstand a potential exposure to ferric chloride and constant exposure to 3% hydrochloric acid which could reach 31% in a rare instance, would this PEEK withstand these chemicals? A: PEEK fasteners work well with harsh … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, Technical Questions | Tagged PEEK fasteners for hydrochloric acid, PEEK fasteners for hydrochloric acid corrosion resistance, PEEK for hydrochloric acid, PEEK for hydrochloric acid corrosion resistance, PEEK screws for hydrochloric acid, PEEK threaded rod for hydrochloric acid, polymer fasteners for hydrochloric acid, Polymers for hydrochloric acid | Leave a comment

Hastelloy Gasket for Sulfuric Acid

Posted on November 13, 2020 by Kathleen

Q: I have a highly corrosive sulfuric acid application that I need a gasket for a Hastelloy flange. Can you tell me which style gasket would work best? A: The JP/JG gasket would be the best for your application. Because it can be made from specialty alloys like the Hastelloy … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged corrosion resistant gaskets, gasket for sulfuric acid, gasket for sulfuric acid corrosion resistance, hastelloy gaskets, jg / jp gasket, nickel alloy gaskets, revoseal gaskets, specialty alloy gaskets | Leave a comment

PTFE Screws for High Temperature Corrosion Resistance

Posted on October 14, 2020 by Kathleen

Q: I need a polymer fastener that offers the best corrosion resistance at high temperatures. I’m using a low percentage of H2SO4 but temps can get up to 300F. Any ideas? A: The best polymer fastener for high temperature corrosion resistance is PTFE screws. PTFE fasteners offer excellent corrosion resistance … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, High Temperature Resistance, Material, Technical Questions | Tagged PTFE bolts for H2SO4 corrosion, PTFE bolts for high temperature corrosion, PTFE bolts for sulfuric acid corrosion, PTFE fasteners for H2SO4 corrosion, PTFE fasteners for high temperature corrosion, PTFE fasteners for sulfuric acid corrosion, PTFE screws for H2SO4 corrosion, PTFE screws for high temperature corrosion, PTFE screws for sulfuric acid corrosion | Leave a comment

Titanium Grade 5 for Medical Implant Bolting

Posted on October 13, 2020 by Kathleen

Q: We are researching a bolt to be used in a medical implant? Is there a standard material you can suggest? A: While there are a variety of possibilities depending on the requirements for the screw, a go to material for many implantable fasteners for good strength and biocompatibility, is … Continue reading →

C276 Bolting for Valve in NaCl

Posted on October 9, 2020 by Kathleen

Q: We are using A4 stainless bolting on Hastelloy C22 valves for a process that involves NaCl processing media. We are experiencing corrosion. Can you suggest a bolt that would help eliminate this. Can you make any suggestions? Also could you share the mechanical properties of any suggestions as well. … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged C276 bolts for NaCl corrosion, C276 fasteners for NaCl corrosion, C276 screws for NaCl corrosion | Leave a comment

PEEK, PTFE, & PVDF Screws for Sterilization Processes

Posted on October 6, 2020 by Kathleen

Q: I need a polymer fastener that can withstand high temp pharma sterilization processes? There may also be chemical contaminants in the process. A: Depending on the temperatures you are looking at, the three options to consider would be PEEK, PVDF or PTFE fasteners. PEEK fasteners can be used to … Continue reading →

Alloy 926 Bolts for Improved Corrosion Resistance to 316

Posted on October 2, 2020 by Kathleen

Q: I have some 316 bolts that are experiencing slight corrosion from a mild chloride environment. I need an economic solution but a more corrosion resistant material. Any ideas? A: You have a few options here but you should consider a class of alloys called 6 Mo or 6 Moly … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 926 bolts for improve corrosion compared to 316, Alloy 926 bolts vs 316, Alloy 926 bolts vs stainless steel, Alloy 926 fasteners for improve corrosion compared to 316, Alloy 926 fasteners vs 316 stainless, Alloy 926 fasteners vs stainless steal, Alloy 926 screws for improve corrosion compared to 316, Alloy 926 screws vs 316, Alloy 926 screws vs stainless steal, Alloy 926 vs 316 S, Alloy 926 vs 316 stainless | Leave a comment

PTFE vs PEEK for Hydrochloric Acid Corrosion

Posted on September 23, 2020 by Kathleen

Q: I’m using PEEK fasteners in hydrochloric acid but am seeing a slight bit of corrosion or degradation of the fastener. Can you recommend a better polymer for resistance? A: For corrosion in HCL, a better choice may be PTFE screws. PTFE fasteners are virtually inert to most organics, acids … Continue reading →

Super Duplex Bolts Compared to 254 SMO & Titanium

Posted on September 18, 2020 by Kathleen

Q: I need a material with slightly more corrosion resistance than the Super Duplex bolts I’m using. I’m using them in heated salt water for desalination and over time experiencing slight corrosion. Anything that could withstand the salt water better? A: You have a lot of options. One may be … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Duplex bolts compared to 254 SMO, Duplex fasteners compared to 254 SMO, Duplex screws compared to 254 SMO, Duplex2507 bolts compared to 254 SMO, Duplex2507 fasteners compared to 254 SMO, Duplex2507 screws compared to 254 SMO, Super Duplex 2507 bolts compared to 254 SMO, Super Duplex 2507 bolts compared to Titanium, Super Duplex 2507 compared to 254 SMO, Super Duplex 2507 fasteners compared to 254 SMO, Super Duplex 2507 screws compared to 254 SMO | Leave a comment

Hastelloy C276 Bolts vs Inconel 625 Bolts

Posted on September 14, 2020 by Kathleen

Q: Can you tell me the difference between Hastelloy C276 and Inconel 625? They both seem to be corrosion resistant to sulfuric acid but I also need a high strength material. A: Yes both perform well in sulfuric acid application, but in terms of corrosion resistance, Hastelloy C276 bolts would … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged Hastelloy bolts vs Inconel bolts, Hastelloy C276 bolts vs. Inconel 625 bolts, Hastelloy C276 fasteners vs. Inconel 625 fasteners, Hastelloy C276 screws vs. Inconel 625 screws, Hastelloy C276 vs. Inconel 625, Hastelloy fasteners vs. Inconel fasteners, Hastelloy screws vs Inconel screws, Hastelloy screws vs. Inconel screwss, Hastelloy vs Inconel | Leave a comment

When to Choose Duplex Steel Bolts vs 316 Stainless

Posted on September 14, 2020 by Kathleen

Duplex Steel: Strength & Corrosion Resistance Beyond 316 316 Stainless steel fasteners have many applications, but if you are looking for an all-around improved fastener without breaking the budget, Duplex alloys might be a good choice. Duplex steel fasteners are known for their improved strength (being about 2x stronger) and … Continue reading →

Exposing PEEK Screws to HCl

Posted on September 8, 2020 by Kathleen

Q: What is the max temperature I could expose PEEK screws to HCl? A: This depends on the concentration of the HCl but if you were at about 15%, the PEEK fasteners can be exposed to about 100C of hydrochloric acid solution. See this chart https://www.extreme-bolt.com/peek-fasteners-flanges.html#Chemical. That is the max … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, High Strength, High Temperature Resistance, Technical Questions | Tagged Exposing PEEK bolts to HCL, Exposing peek bolts to hydrochloric acid, Exposing Peek fasteners to HCl, Exposing PEEK fasteners to Hydrochloric acid, Exposing PEEK Screws to HCl, Exposing PEEK screws to hydrochloric acid, max temperature I could expose PEEK bolts to HCl, max temperature I could expose PEEK fasteners to HCl, max temperature I could expose PEEK fasteners to Hydrochloric acid, max temperature I could expose PEEK screws to HCl, max temperature I could expose PEEK screws to hydrochloric acid | Leave a comment

Titanium Screws for Bleach Corrosion Resistance

Posted on September 4, 2020 by Kathleen

Q: We are using a bleach solution as part of a medical device application and seeing some rust/corrosion? Any ideas on a fastener material that will not corrode in bleach? Chemicals used are: 5.25% Sodium hypochlorite (or 10% bleach), 70% Isopropyl alcohol and Ammonium chloride A: You might want to … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Titanium bolts for bleach corrosion, titanium bolts for Sodium hypochlorite corrosion, titanium fasteners for Ammonium chloride corrosion, titanium fasteners for bleach corrosion, titanium fasteners for Sodium hypochlorite corrosion, titanium screws for Ammonium chloride corrosion, Titanium screws for bleach corrosion, titanium screws for Sodium hypochlorite corrosion | Leave a comment

Zeron 100 Bolts for Saltwater and Acid

Posted on September 2, 2020 by Kathleen

Q: I’m using Duplex 2205 for a saltwater application but am starting to have some corrosion due to some sulfuric acid contamination. Can you suggest anything that might help improve the corrosion resistance? A: If you’re on the borderline with Duplex 2205 you might want to consider a Super Duplex … Continue reading →

Posted in Application, Corrosion Resistance | Tagged zeron 100 bolts for acid corrosion, zeron 100 bolts for saltwater corrosion, zeron 100 fasteners for acid corrosion, zeron 100 fasteners for saltwater corrosion, zeron 100 screws for acid corrosion, zeron 100 screws for saltwater corrosion, Zeron Bolts for Saltwater and Acid corrosion, Zeron Fasteners for Saltwater and Acid corrosion, zeron screws for saltwater and acid corrosion | Leave a comment

Zirconium Fasteners for HCl Corrosion

Posted on September 1, 2020 by Kathleen

Q: Can I use zirconium bolts in boiling HCl. Concentration would be about 5%? A: Yes, zirconium fasteners work well in hydrochloric acid but may be a bit overkill at that relatively low concentration but depends on the temperature and other media it may be exposed to. Zirconium screws do … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Zirconium bolts for HCl corrosion, Zirconium bolts for hydrochloric acid corrosion, Zirconium fasteners for HCl corrosion, Zirconium fasteners for hydrochloric acid corrosion, Zirconium screws for HCl corrosion, Zirconium screws for hydrochloric acid corrosion | Leave a comment

254 SMO vs. Alloy 20 or AL6XN in Sulfuric Acid

Posted on August 28, 2020 by Kathleen

Q: How does 254 SMO compare with Alloy 20 and AL6XN? Can it handle sulfuric acid? A: To answer your first question, I’ve ranked each of these specialty alloys in terms of their general corrosion resistance to sulfuric acid: 1. Alloy 20 Most 2. AL6XN Moderate 3. 254 SMO Least … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged 254 SMO bolts compared to AL6XN, 254 smo bolts compared to alloy 20, 254 SMO compared to AL6XN, 254 SMO compared to alloy 20, 254 SMO fasteners compared to AL6XN, 254 SMO fasteners compared to Alloy 20, 254 SMO screws compared to AL6XN, 254 SMO screws compared to alloy 20, 254 SMO vs AL6XN, 254 SMO vs alloy 20, Alloy 20 bolts for sulfuric acid, alloy 20 fasteners for sulfuric acid, alloy 20 screws for sulfuric acid | Leave a comment

PVDF Screws for Sulfuric Acid & Strength

Posted on August 27, 2020 by Kathleen

Q: I’m looking for a polymer that can be exposed to low concentration of sulfuric acid. Which polymer do you recommend? I tried PTFE but they don’t seem to be as strong as I need. A: PTFE and PFA fasteners offer the highest polymer corrosion resistance but the trade-off is … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, High Strength, Technical Questions | Tagged polymer bolts for sulfuric acid, polymer fasteners for sulfuric acid, polymer screws for sulfuric acid, PVDF bolts for sulfuric acid, PVDF bolts for sulfuric acid corrosion resistance, PVDF fasteners for corrosion resistance, PVDF fasteners for sulfuric acid, PVDF fasteners for sulfuric acid corrosion resistance, PVDF screws for sulfuric acid, PVDF screws for sulfuric acid corrosion resistance | Leave a comment

Duplex Steel Bolts for Brackish Water

Posted on August 26, 2020 by Kathleen

Q: I’m looking for a material that can service a brackish water environment with high strength around 100ksi, would SMO 254 work for me? A: In terms of the corrosion resistance, yes, but for strength you are right on the edge of the capabilities for 254 SMO fasteners. 254 SMO … Continue reading →

Hastelloy Bolts for Nitric Acid Corrosion

Posted on August 20, 2020 by Kathleen

Q: Which material would be better suited for a nitric acid environment (Hastelloy C276 or Inconel)? The screws would not be submersed in the acid, but in a room where the screws would be around the fumes. A: For nitric acid fumes Hastelloy C276 bolts would be the go-to material … Continue reading →

Titanium Grade 2 Fasteners for Chlorides/Moderate Strength

Posted on July 15, 2020 by dean

Q: Hello I am researching titanium and C276 hardware for a submerged application in a high chloride (20,000 mg/L) elevated temperature environment (125F). Corrosion resistance is more important than shear or tensile strength in this application. A: Titanium screws should be a good choice for your application especially Grade 2 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Technical Questions | Tagged Hastelloy bolts for chloride and HCL corrosion, Hastelloy C276 bolts for chloride and HCL corrosion, Hastelloy C276 fasteners for chloride and HCL corrosion, Hastelloy C276 screws for chloride and HCL corrosion, Hastelloy fasteners for chloride and HCL corrosion, Hastelloy screws for chloride and HCL corrosion, Titanium bolts for chloride corrosion, Titanium fasteners for chloride corrosion, Titanium grade 2 bolts for chloride corrosion, Titanium grade 2 fasteners for chloride corrosion, Titanium grade 2 screws for chloride corrosion, Titanium screws for chloride corrosion | Leave a comment

Super Duplex Bolts for Greater Strength over 400 Stainless

Posted on June 29, 2020 by dean

Q: Currently I’m using screws made of 400 series stainless steel for use in factory machinery that is moving in a circular path creating a centrifugal force. Our existing bolts are breaking and we’re looking for a bolt with a more rigid type of material that will not break or … Continue reading →

Monel Better than Nickel 200 for HF Corrosion

Posted on June 16, 2020 by dean

Monel HF vs Nickel Alloys revised Q: Will Nickel 200 bolts be a good choice for hydrofluoric acid? A: For aqueous HF, Nickel 200 fasteners offer limited protection. If application requires a metal then you may want to consider Monel 400. Monel 400 bolts are the most resistant option for hydrofluoric acid in all concentrations up … Continue reading →

Zirconia Fasteners for Non-Reactive 2000C Application

Posted on June 11, 2020 by dean

Q: I am looking for recommendations for fasteners capable of operating under load at 2000C, in a mild vacuum environment. The material can be conductive or insulating just along as it does not react with carbon. A: For temperatures as high as 2000C, Zirconia ceramic fasteners would be your only … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, Corrosion Resistance, FAQs, High Temperature Resistance, Technical Questions | Tagged zirconia bolts for high temperature, zirconia ceramic bolts for 2000C application, zirconia ceramic bolts for high temperature, zirconia ceramic fasteners for 2000C application, zirconia ceramic fasteners for high temperature, zirconia ceramic screws for 2000C application, zirconia ceramic screws for high temperature, zirconia fasteners for 2000C application, zirconia fasteners for high temperature, zirconia screws for 2000C application, zirconia screws for high temperature | Leave a comment

Inconel 625 Bolts For High Temperature Corrosion

Posted on May 18, 2020 by dean

Q: Is there a material you can recommend that can handle a high temperature exhaust stream which has trace corrosive chemicals? I’ve tried A286 bolting but am having some corrosion issues. A: When a process demands high temperature corrosion resistance, depending on the temperature and amount of contamination, you might … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged Inconel 625 bolts for exhaust stream corrosion, Inconel 625 bolts for high temperature corrosion, Inconel 625 fasteners for exhaust stream corrosion, Inconel 625 fasteners for high temperature corrosion, Inconel 625 screws for exhaust stream corrosion, Inconel 625 screws for high temperature corrosion, Inconel bolts for high temperature corrosion, Inconel fasteners for high temperature corrosion, Inconel screws for high temperature corrosion | Leave a comment

Hastelloy Bolts For 37% HCl at Room Temperature

Posted on May 1, 2020 by dean

C276-HCl IsoCorrosion Q: I am needing to replace some hex heads and nuts on an HCL tank lid. It appears they were originally coated and due to a previous leak, they are starting to corrode. What would be the best alternative bolt type for this situation? HCL concentration is 37% and is … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Technical Questions | Tagged Hastelloy bolts for HCl corrosion, Hastelloy bolts for hydrochloric acid corrosion, Hastelloy C276 bolts for HCl corrosion, Hastelloy C276 fasteners for HCl corrosion, Hastelloy C276 screws for HCl corrosion, Hastelloy FAsteners for HCl corrosion, hastelloy fasteners for hydrochloric acid corrosion, hastelloy screws for HCl corrosion, hastelloy screws for hydrochloric acid corrosion | Leave a comment

Fasteners That Keep Us Safe

Posted on April 28, 2020 by dean

Modern day engineering is key to helping the world through this difficult time, and specialty material bolts make it possible. Materials like titanium, PEEK and 17-4PH provide the corrosion resistance and high strength needed for manufacturing and high-tech distribution. This newsletter shows some of the ways Extreme Bolt & Fastener … Continue reading →

Posted in Application, Blog, Corrosion Resistance, Engineered Polymer Fasteners, High Strength, Material, Specialty Metal Fasteners, Ultra Purity | Tagged 17-4PH bolts for robotic systems, 17-4PH fasteners for robotic systems, 17-4PH screws for robotic systems, al6xn screws for chloride corrosion resistance, AL6XN screws for chloride resistance, Hastelloy fasteners for pharmaceutical, Hastelloy screws for pharmaceutical, peek bolts for chemical resistance, PEEK fasteners for chemical resistance, PEEK fasteners for strength and stiffness, PEEK screws for chemical resistance, PEEK screws for strength and stiffness, PTFE fasteners for pharmaceutical, PTFE screws for pharmaceutical, titanium bolts for chloride corrosion resistance, titanium bolts for pulp & paper, titanium fasteners for chloride corrosion resistance, titanium fasteners for pulp & paper, Titanium screws for chloride corrosion resistance, titanium screws for pulp & paper | Leave a comment

Duplex Bolts for Oil & Gas Brine

Posted on April 27, 2020 by dean

Q: I have the need for a bolt that can withstand high temp brine byproduct from an oil & gas installation. Any suggestions? A: Depending on what temperatures you are dealing with Duplex Steel bolts may be a good fit. Duplex bolts provide good localized resistance to brines and chlorides. … Continue reading →

Inconel 625 Bolt for High Temperature Chemical Processing

Posted on April 21, 2020 by dean

Q: I need a bolt that can handle a chemical processing situation where there are not only corrosive chemicals but also high temperatures that can fluctuate. Max temp is around 1200F. What would you suggest? A: Not knowing the chemicals you are using makes it tough, but for high temperature … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged Inconel 625 bolts for chemical processing, Inconel 625 bolts for chemical resistance, Inconel 625 bolts for high temperature chemical resistance, Inconel 625 fasteners for chemical processing, Inconel 625 fasteners for chemical resistance, Inconel 625 fasteners for high temperature chemical resistance, Inconel 625 screws for chemical processing, Inconel 625 screws for chemical resistance, Inconel 625 screws for high temperature chemical resistance, Inconel bolts for chemical resistance, Inconel screws for chemical resistance | Leave a comment

PTFE and Monel Fasteners for Hydrofluoric Acid

Posted on April 20, 2020 by dean

Q: I need a material that is resistant to a small concentration of hydrofluoric acid at room temperature? Can you offer any suggestions? A: Two materials come to mind. First in terms of metal alloys Monel 400 bolts are resistant to most concentrations of hydrofluoric acid. If you prefer a … Continue reading →

Hastelloy vs. Zirconium for HCl with Contaminants

Posted on April 17, 2020 by dean

Q: I have a process that utilizes about 10% hydrochloric acid with trace amounts of other chemicals. I tried zirconium bolts because they are known for HCl but we’re burning through them like crazy and I can’t figure out why they are corroding. Any ideas and what other material may … Continue reading →

Titanium & Monel K500 for High Strength Saltwater Corrosion

Posted on April 9, 2020 by dean

Q: I’ve been using Monel 400 for a saltwater application but I’m having issues with bolts notwithstanding the application pressure. Is there a saltwater resistant fastener that can give me higher strength? A: Yes for higher strength saltwater resistance you have two options. Monel K500 bolts are an age hardened … Continue reading →

PTFE and PVDF for High Purity Corrosive Application

Posted on April 2, 2020 by dean

Q: We are having some issues with corrosion in a highly sensitive pharma application. I need a bolt that is corrosion resistant to both acids and organics, but is usable in a high purity situation. Temperatures can reach about 120F. Also, it would need to be a polymer screw available … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, Technical Questions, Ultra Purity | Tagged polymer fasteners for FDA application, polymer fasteners for pharmaceutical, polymer screws for corrosion, polymer screws for FDA, polymer screws for pharmaceutical, polymer screws for USDA application, PTFE fasteners for corrosion, PTFE fasteners for FDA application, PTFE fasteners for USDA application, PTFE screws for corrosion, PTFE screws for FDA application, ptfe screws for USDA application, PVDF fasteners for corrosion, PVDF fasteners for FDA, PVDF fasteners for high purity, PVDF for high purity, PVDF screws for corrosion, pvdf screws for FDA, PVDF screws for high purity, pvdf screws for USDA application | Leave a comment

Hastelloy Bolts for Acid Contaminated Chloride

Posted on April 1, 2020 by dean

Q: I have an application that is exposed to mainly chloride but has some other acid contamination. Can I still use titanium to protect for corrosion. A: Though titanium fasteners are highly resistant to chloride – almost immune – they typically do not work well with many other mixed acid … Continue reading →

Tantalum Screws for Hydrochloric Acid Resistance

Posted on March 30, 2020 by dean

Q: We currently use Titanium screws, and I would like to know pricing and lead time to replace them with Tantalum screws to improve their resistance to HCL. A: What concentration and temp are you at with the HCl? See the HCl Iso-Corrosion curve for Hastelloy C276. Tantalum screws will … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged alloy C276 bolts for HCl, alloy C276 fasteners for HCl, alloy C276 screws for HCl, C276 bolts for hydrochloric acid, C276 fasteners for hydrochloric acid, c276 for hydrochloric acid, c276 screws for hydrochloric acid, Hastelloy bolts for HCl, Hastelloy Fasteners for HCl, Hastelloy screws for HCl, Tantalum bolts for HCl, tantalum bolts for hydrochloric acid, Tantalum fasteners for HCl, tantalum fasteners for hydrochloric acid, tantalum screws for HCl, tantalum screws for hydrochloric acid | Leave a comment

Monel Bolts for Saltwater Wharf

Posted on March 27, 2020 by dean

Q: We are installing bolts into a refinery wharf. After doing a test run on a few A316 stainless steel bolts, they came back heavily corroded. Do you have an coating that can be used for salt water applications that would prevent this? Or do can you advise on another … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged bolts for saltwater wharf, fasteners for saltwater wharf, Monel 400, Monel 400 bolts for saltwater corrosion resistance, Monel 400 fasteners for saltwater corrosion resistance, Monel bolts for saltwater corrosion, monel bolts for wharf fasteners, monel fasteners for saltwater corrosion, Monel K500 for salt water corrosion resistance, Monel K500 screws for saltwater corrosion resistance, monel screws for saltwater corrosion, screws for saltwater wharf, titanium bolts for saltwater wharf, titanium grade 5 bolts for saltwater corrosion, titanium grade 5 fasteners for saltwater corrosion, titanium grade 5 screws for saltwater corrosion | Leave a comment

Hastelloy Spanner Screw for Security

Posted on March 27, 2020 by dean

Q: I’m looking for a unique type of screw called a snake eye screw. I noticed that you work with specialty alloys and I’m looking for this part made of hastelloy – is this possible? A: A snake eye screw is another name for a spanner security screw. Depending on … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Hastelloy snake eye screw, Hastelloy snake eye security screw, Hastelloy snake eye tamper proof screw, Hastelloy spanner screw | Leave a comment

Hastelloy Tamper Proof Screws for Sulfuric Acid Protection

Posted on March 26, 2020 by dean

Q: I have a hazardous application that involves sulfuric acid. We need to prevent anyone from tampering with this application. Can you help me out with a solution? A: Yes. First regarding the sulfuric acid, you’ll need a bolt that can resist this type of environment. Depending on the concentration … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged hastelloy security fasteners, Hastelloy security screws, Hastelloy tamper proof screws, hastelloy tamper proof screws for sulfuric acid, Hastelloy tamper resistant screws, hastelloy tamper resistant screws for sulfuric acid | Leave a comment

Titanium Anchor Bolts for Marine Concrete Fastening

Posted on March 25, 2020 by dean

Q: I have a need for a marine resistant fastener that I can use to fasten equipment to concrete. Is there a bolt you can recommend? A: For concrete fastening one of the best solutions is a wedge anchor bolt. This style of bolt features an expansion mechanism which expands … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Duplex Anchor Bolts for Saltwater, Duplex anchor bolts for seaspray, Duplex Anchor Bolts for Seawater, duplex steel anchor bolts for saltwater, Duplex steel anchor bolts for seawater, duplex steel wedge anchor bolts for saltwater, duplex wedge anchor bolts for seawater, titanium anchor bolts for saltwater, titanium anchor bolts for seawater, titanium wedge anchor bolts for saltwater, titanium wedge anchor bolts for seawater | Leave a comment

Super Duplex Bolts Ideal for Strength & Seaspray

Posted on March 18, 2020 by dean

Q: I need a large quantity of fasteners that can offer about 100ksi of tensile strength and provide me resistance to seaspray and salt air. Is titanium a good choice? A: Titanium grade 5 bolts will meet both these requirements, but will probably be overkill in your situation. For this … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners, Technical Questions | Tagged Duplex 2507 bolts for seaspray corrosion, duplex 2507 fasteners for seaspray corrosion, duplex 2507 screws for seaspray corrosion, super duplex 2507 bolts for strength in saltwater, super duplex 2507 fasteners for strength in saltwater, super duplex 2507 screws for strength in saltwater, super duplex bolts for seaspray corrosion, super duplex fasteners for seaspray corrosion, super duplex screws for seaspray corrosion, super duplex steel bolts for saltwater and strength, super duplex steel screws for salt water and strength | Leave a comment

Bolts to Meet NACE Oil & Gas Specs

Posted on March 17, 2020 by dean

Q: We’re in need of bolts for an oil & gas refinery. How can I be sure you your materials meet technical requirements. A: We can provide fasteners that meet NACE MR0175 and NACE MR0103 specific requirements for different metallic materials. When requesting a quote, please ask for all necessary … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions, Uncategorized | Tagged NACE MR0103 bolts, NACE MR0103 fasteners, NACE MR0103 screws, NACE MR0175 bolts, NACE MR0175 fasteners, NACE MR0175 screws | Leave a comment

Hastelloy and Nitric Acid

Posted on March 17, 2020 by dean

Q: Can I use Hastelloy C276 bolts for protection from Nitric Acid? A: Typically this is not recommended. Though C276 bolts are highly corrosion resistant to many acids, it is not very resistant to strong oxidizers like nitric acid. Materials with higher chromium content like Incoloy and possibly Hastelloy C22 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged C22 bolts for nitric acid, c22 bolts for nitric acid corrosion, c22 fasteners for nitric acid corrosion, C22 for nitric acid, c22 screws for nitric acid, incoloy bolts for nitric acid, Incoloy bolts for oxidizing corrosion, incoloy fasteners for nitric acid, Incoloy for oxidizing corrosion, incoloy screws for nitric acid, incoloy screws for oxidizing corrosion | Leave a comment

Nickel 200 Bolts for Sodium Hydroxide Corrosion

Posted on March 11, 2020 by dean

Q: We’re using sodium hydroxide as a water treatment chemical to raise the pH of water but are experiencing corrosion. Is there a material that can handle this? A: Typically for caustic soda (sodium hydroxide) corrosion, you might want to consider Nickel 200 bolts. Nickel 200 is best known for … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Nickel 200 bolts for caustic corrosion, Nickel 200 bolts for Sodium Hydroxide Corrosion, nickel 200 fasteners for Sodium Hydroxide Corrosion, nickel 200 for Sodium Hydroxide Corrosion, nickel 200 screws for caustic corrosion, nickel 200 screws for Sodium Hydroxide Corrosion | Leave a comment

Choosing the Right Material for Chloride Corrosion

Posted on February 6, 2020 by dean

Fasteners for CHLORIDE CORROSION Fighting chloride corrosion is one of the most common issues that face industrial processes. From industrial process in water treatment to pulp & paper as well as seawater applications, chlorides are very common and menace to industry. This brief newsletter shares insight into which materials for … Continue reading →

C276 Socket Head Cap Screw Torque

Posted on January 29, 2020 by dean

Q: Can you provide the torque specification for a Hastelloy C276 4-40 socket head cap screw and a Nickel 200 4-40 socket head cap screw? A: The torque tables are developed for screw heads that have no limitations on torque. Unfortunately the socket head drives will likely cam-out before you … Continue reading →

Posted in Application, Corrosion Resistance, Material, Specialty Metal Fasteners | Tagged c276 socket had cap screw torque, C276 torque specifications, C276 torque specs, hastelloy socket head cap screw torque, hastelloy torque specifications, hastelloy torque specs, Torque specifications, Torque specs | Leave a comment

Inconel for High Strength Sour Gas Applications

Posted on November 20, 2019 by dean

I am looking for the best available material solution for Oil&Gas industry with occasionally presence of H2S. For now we are using A286 but I am not sure about its H2S resistance. What kind of material you can recommend that is comparable to A286 and is H2S rated? When … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners, Technical Questions | Tagged Inconel 625 bolts for high strength sour gas, Inconel 625 bolts for sour gas, Inconel 625 fasteners for sour gas, Inconel 625 screws for high strength sour gas, Inconel 625 screws for sour gas, Inconel 718 bolts for high strength sour gas, Inconel 718 bolts for high strength sulfuric acid, Inconel 718 bolts for sour gas, Inconel 718 fasteners for high strength sour gas, Inconel 718 fasteners for high strength sulfuric acid, Inconel 718 fasteners for sour gas, Inconel 718 screws for high strength sour gas, Inconel 718 screws for high strength sulfuric acid, Inconel 718 screws for sour gas | Leave a comment

Monel Bolts for Improved Saltwater Resistance to 316

Posted on November 11, 2019 by dean

Q: We are installing denso jackets around several steel piles at a wharf. The jackets are going to be held together by A316 stainless steel bolts. After doing a test on a few, they came back heavily corroded. Can you suggest a material that can handle the salt water? A: … Continue reading →

Monel Bolts Over Nickel 200 for Aqueous Hydrofluoric Acid

Posted on November 6, 2019 by dean

Q: I’m using aqueous Hydrofluoric acid in a silicon etching process but amy Nickel 200 bolts aren’t holding up. Is there a better material I can use? A: Nickel 200 fasteners are excellent for use in anhydrous hydrofluoric acid, but in the aqueous form of HF acid they offer limited … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Monel bolts for aqueous hydrofluoric acid corrosion, Monel bolts for HF acid corrosion, Monel bolts for HF corrosion, Monel bolts for hydrofluoric acid corrosion, Monel fasteners for aqueous hydrofluoric acid corrosion, Monel fasteners for HF acid corrosion, Monel fasteners for HF corrosion, Monel fasteners for hydrofluoric acid corrosion, Monel screws for aqueous hydrofluoric acid corrosion, Monel screws for HF acid corrosion, Monel screws for HF corrosion, Monel screws for hydrofluoric acid corrosion, Nickel 200 bolts for anhydrous hydrofluoric acid, Nickel 200 fasteners for anhydrous hydrofluoric acid, Nickel 200 screws for anhydrous hydrofluoric acid | Leave a comment

Nickel 200 Bolts for Sodium Sulfide & Sodium Hydroxide

Posted on November 1, 2019 by dean

Q: I work in a plant that manufactures paper. We’re treating pulp with a solution containing sodium sulfide and sodium hydroxide to dissolve the wood materials and produce cellulose to make paper. Can you suggest a material that can give our bolting some corrosion protection and better longevity. Some of … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Nickel 200 bolts for alkali solutions, nickel 200 bolts for sodium hydroxide, Nickel 200 bolts for sodium hydroxide corrosion resistance, Nickel 200 Bolts for Sodium Sulfide, Nickel 200 bolts for sodium sulfide corrosion resistance, Nickel 200 fasteners for alkali solutions, Nickel 200 fasteners for Sodium Hydroxide, Nickel 200 fasteners for sodium hydroxide corrosion resistance, Nickel 200 fasteners for Sodium Sulfide, Nickel 200 screws for alkali solutions, nickel 200 screws for sodium hydroxide, Nickel 200 screws for sodium hydroxide corrosion resistance, Nickel 200 screws for Sodium Sulfide, Nickel 200 screws for sodium sulfide corrosion resistance | Leave a comment

Nickel 200 Bolts for Chlor Alkali Process

Posted on October 22, 2019 by dean

Q: I’m running a chlor alkali process to produce sodium hydroxide. We would like bolts that have a strong resistance to the NaOH. Should I try hastelloy? A: In terms of caustic alkaline solutions, such as sodium hydroxide, your best bet would be Nickel 200 bolts which are known to … Continue reading →

Monel 400 Bolts for Naval Assembly

Posted on July 24, 2019 by dean

Q: We are providing the Navy components made of Navy G Bronze that incorporates shoulder bolts and set screws. The assembly will be exposed to air, salt water, modest temperatures (0C to 80C), and limited stress. What alloy do you recommend? A: Sounds like a Monel 400 might be a … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Monel 400 bolts for saltwater resistance, Monel 400 bolts for seawater resistance, Monel 400 fasteners for saltwater resistance, Monel 400 fasteners for seawater resistance, Monel 400 scews for seawater resistance, Monel 400 screws for saltwater resistance, salt water resistant bolts, salt water resistant set screws, salt water resistant shoulder bolts, saltwater resistant bolts, saltwater resistant set screws, saltwater resistant shoulder bolts, seawater resistant bolts, seawater resistant set screws, seawater resistant shoulder bolts | Leave a comment

Which Polymer Is Right for You?

Posted on July 24, 2019 by dean

PEEK, PVDF and PTFE all offer lightweight, electrical & thermal insulation and great corrosion resistance. But when it comes to strength, temperature, purity and corrosion, each has its niche. The newsletter points out which is best to use in different conditions. TEMPERATURE PEEK and PTFE screws offer excellent high temperature … Continue reading →

Posted in Application, Blog, Corrosion Resistance, Engineered Polymer Fasteners, High Strength, High Temperature Resistance, Lightweight, Material | Tagged corrosion resistant polymer bolts, corrosion resistant polymer screws, high strength polymer bolts, High strength polymer fasteners, high strength polymer screws, high temperature polymer bolts, high temperature polymer screws, high temperature resistant polymer fasteners, high temperature resistant polymer scres, polymer bolts for corrosion, polymer bolts for high temperature, polymer fasteners for corrosion, polymer screws for corrosion, Polymer screws for high temperature | Leave a comment

A4-80 vs Monel K500 Fasteners in Sea Water

Posted on April 3, 2019 by dean

Q: For a marine project will 316SS cold worked (grade A4-80) hold up in strength pretty close to Monel K500? And what is the price comparison? A: Thanks for contacting and good question. The major difference is the strength and corrosion resistance. You will have decent strength of a A4-80 … Continue reading →

HCl Acid – Polymer, Zirconium or Tantalum Fasteners

Posted on April 3, 2019 by dean

Q: We have on application that utilizes an HCl tank and are currently using hastelloy C276 bolts but they are not sufficient. Should we try tantalum fasteners or anther material like PEEK? The bolts are for a flanged valves connections concentration is 36%, temperature 45ºC. A: Though the HCl is … Continue reading →

17-4 Corrosion Resistance and Strength?

Posted on April 3, 2019 by dean

Q: I need a material that offers about 80-90ksi yield but is also corrosion resistant to low concentrations of sulfur acid. I’m tried 17-4Ph but its not working? Any ideas. A: Yes, 17-4PH fasteners are excellent for high strength like you need, but are not really geared for corrosion resistance … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged 17-4PH bolts corrosion resistance, 17-4PH bolts for high strength, 17-4PH bolts for strength, 17-4PH fasteners corrosion resistance, 17-4PH fasteners for high strength, 17-4PH fasteners for strength, 17-4PH screws corrosion resistance, 17-4PH screws for high strength, 17-4PH screws for strength, 17-4PH vs Alloy 625, 17-4PH vs Inconel 625 | Leave a comment

Do’s and Don’ts of Titanium Fasteners

Posted on March 25, 2019 by dean

Titanium is an amazing material offering strength, lightness of weight, and corrosion resistance but there are also instances that titanium should not be used. This brief newsletter covers the do’s and don’ts of titanium screws. Do Use for Saltwater & Chloride Resistance One of the most noteworthy uses of titanium … Continue reading →

Posted in Application, Blog, Corrosion Resistance, High Strength, Lightweight, Specialty Metal Fasteners | Tagged titanium bolts for chloride, Titanium bolts for chloride corrosion, titanium bolts for saltwater, titanium bolts for saltwater corrosion, titanium fastener applications, titanium fastener uses, titanium fasteners for chloride, Titanium fasteners for chloride corrosion, titanium fasteners for saltwater, titanium fasteners for saltwater corrosion, titanium screws for chloride, Titanium screws for chloride corrosion, titanium screws for saltwater, titanium screws for saltwater corrosion | Leave a comment

PEEK vs Torlon Fasteners for Non-Conductivity & Salt Water

Posted on February 1, 2019 by dean

Q: I’m looking for a polymer washer that can be used as a dielectric break between aluminum and titanium. It will also be exposed to salt water. Is torlon a good choice? A: Torlon washers will work in this situation, but there are probably more cost efficient solution for this … Continue reading →

Posted in Corrosion Resistance, Engineered Polymer Fasteners, FAQs, High Temperature Resistance, Technical Questions | Tagged PEEK fasteners for salt water resistance, PEEK fastners for dielectric strength, PEEK for salt water resistance, PEEK screws for dielectric strength, PEEK screws for salt water resistance, PEEK washers for dielectric strength, PEEK washers for salt water resistance, Torlon bolts for dielectric strength, Torlon fasteners for high temperature appliations, Torlon fastners for dielectric strength, Torlon screws for dielectric strength, Torlon screws for high temperature appliations, Torlon washers for dielectric strength, Torlon washers for high temperature appliations | Leave a comment

When NOT to Use Zirconium Bolts in Nitric Acid

Posted on January 30, 2019 by dean

Q: I’ve been using zirconium to handle a nitric acid solution but am still experiencing corrosion? I’m not sure why or if there is a better option? A: Zirconium bolts offer some of the best corrosion resistance to nitric acid as well as sulfuric acid and hydrochloric acid, even at … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged tantalum bolts nitric acid corrosion, tantalum bolts nitric acid resistanceis, tantalum fasteners nitric acid corrosion, tantalum fasteners nitric acid resistanceis, tantalum screws nitric acid corrosion, tantalum screws nitric acid resistanceis, zirconium bolts nitric acid corrosion, zirconium bolts nitric acid resistance, zirconium bolts oxidizing corrosion, zirconium fastemers nitric acid resistance, zirconium fasteners nitric acid corrosion, zirconium fasteners oxidizing corrosion, zirconium screws nitric acid corrosion, zirconium screws nitric acid resistance, zirconium screws oxidizing corrosion | Leave a comment

Titanium Bolts Trump Monel for Intense Chloride Applications

Posted on January 30, 2019 by dean

Q: Since Monel is resistant to NaCl does that mean it can handle a strong chloride situation? A: Monel is resistant to chlorides but, for strong chlorides your best bet is to use Titanium screws. Titanium fasteners are almost inert to all chlorine and chloride environments due to the fact … Continue reading →

Inconel vs 310 Stainless Steel Bolts

Posted on January 23, 2019 by dean

Q: I have a high temperature application that can reach close to 1800F that requires not just corrosion resistance from low levels of acid and salt contamination, but I also need good strength. Would Alloy 310 bolts work? A: Alloy 310 bolts could be a possibility, depending on the strength … Continue reading →

Comparison of Salt Water Resistant Fasteners – Which is Best?

Posted on January 17, 2019 by dean

Salt water is great for swimming, but provides industry a wide range of corrosion challenges from marine vessels to desalination plants, and even off-shore oil. The good news is there are several materials that perform very well in these environments. This newsletter compares them on their salt water corrosion resistance … Continue reading →

PVDF Polymer Screws for High Strength Acid Resistance

Posted on January 17, 2019 by dean

Q: I have a laboratory applications that uses about 25% sulfuric acid at room temperature to 100F. I’d like to use a polymer rather than a metal if possible. I tried PTFE screws because I thought they were corrosion resistant, but they need to be replaced often because they can’t … Continue reading →

Posted in Corrosion Resistance, Engineered Polymer Fasteners, FAQs, High Temperature Resistance, Technical Questions | Tagged PTFE bolts for corrosion resistance, PTFE bolts for sulfuric acid, PTFE fasteners for sulfuric acid, PTFE screws for corrosion resistance, PTFE screws for sulfuric acid, PVDF bolts for corrosion resistance, PVDF bolts for sulfuric acid, PVDF fasteners for corrosion resistance, PVDF fasteners for sulfuric acid, PVDF screws for corrosion resistance, PVDF screws for sulfuric acid | Leave a comment

Titanium Screws and Chlorides

Posted on January 14, 2019 by dean

Q: I’m dealing with a moderate chloride environment but my temperature can sometimes reach 450F. I’ve tried titanium bolts but am having some corrosion issues. Is there another material I can use? A: There are several potential choices but as the temperature increases the corrosion rate and aggressive nature of … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged AL6XN bolts for chloride corrosion, AL6XN bolts for chloride resistance, AL6XN screws for chlori, AL6XN screws for chloride resistance, duplex steel bolts for chloride corrosion, duplex steel for chloride corrosion, duplex steel screws for chloride corrosion, hastelloy c276 bolts for chloride corrosion, Hastelloy C276 for chloride corrosion, hastelloy c276 screws for chloride corrosion, Hastelloy for chloride corrosion, hastelloy screws for chloride corrosion | Leave a comment

Titanium Bolts for Reverse Osmosis Saltwater Corrosion

Posted on January 7, 2019 by dean

Q: I’m working in a reverse osmosis facility that purifies seawater for drinking water. We are experiencing some corrosion in some of our valve attachments which I’m assuming is from the salt water. Any recommendations on a fastener that won’t corrode in these conditions? A: Your best bet would be … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged titanium bolts for salt water resistance, titanium bolts for seawater corrosion, titanium bolts for seawater resistance, titanium fasteners for salt water resistance, titanium fasteners for seawater corrosion, titanium screws for salt water resistance, titanium screws for seawater corroion, titanium screws for seawater resistance | Leave a comment

Tantalum Bolts vs Polymer Bolts for HCl

Posted on November 7, 2018 by dean

Q: We have on application in one HCL tank and we are using hastelloy bolts but they are not efficient. So I ask the quotation for material tantalum in metals or other material like PEEK, please advise what is the better solution. A: It depends on the temperature of the … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Tantalum bolts for high temperature HCl, Tantalum bolts for high temperature hydrochloric acid, tantalum bolts for hydrochloric acid, Tantalum fasteners for high temperature HCl, tantalum fasteners for high temperature hydrochloric acid, tantalum fasteners for hydrochloric acid | Leave a comment

Alloy 20 vs. Hastelloy C27 Bolt for H2SO4

Posted on June 27, 2018 by dean

Q: I have a hot sulfuric acid application that utilizes approximately 25-32% sulfuric acid. I really need a corrosion resistant bolt but due to the vastness of the operation, I’m wondering if there is a lower cost option than Hastelloy. A: For hot sulfuric acid in your concentration range, we … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged alloy 20 bolt for h2SO4, Alloy 20 bolts for sulfuric acid, alloy 20 fasteners for sulfuric acid, Alloy 20 for h2so4, Alloy 20 for sulfuric acid, alloy 20 screws for h2so4, alloy 20 screws for sulfuric acid, alloy 20 sulfuric acid corrosion, alloy 276 fasteners for sulfuric acid resistance, alloy C276 bolts for sulfuric acid resistance, alloy c276 screws for sulfuric acid resistance, Hastelloy bolts for sulfuric acid, hastelloy C276 for sulfuric acid resistance, hastelloy c276 screws for sulfuric acid resistance, Hastelloy fasteners for sulfuric acid, hastelloy screws for sulfuric acid, hastelloy sulfuric acid corrosion | Leave a comment

Duplex Bolt Corrosion

Posted on May 25, 2018 by dean

Q: I need some bolting to attach some surface steam piping for a power industry project. They’re using duplex bolts now but its showing some slight corrosion. Chlorides are involved and maybe some other contaminants. Ideas? A: Surface steam condensers and other power industry elements that are exposed to salts … Continue reading →

Hastelloy C276 Bolts or Duplex Bolts for Waste Water HCl Injection

Posted on May 21, 2018 by dean

Q: We’re making some changes in our waste water treatment process and are going to using hydrochloric acid (HCl) as a means of lowering the pH levels. Will I need to upgrade my duplex bolting? A: Assuming your waster water is at ambient temperatures the only thing you need to … Continue reading →

Titanium or Hastelloy Bolts for Sulfuric Acid?

Posted on May 17, 2018 by dean

Q: I read that titanium regenerates a protective layer quickly in presence of water. Does that mean its okay to use it with sulfuric acid with steam present? A: Titanium fasteners are probably not the best solution for sulfuric acid but may work depending on your concentration and temperature. Titanium … Continue reading →

Posted in Application, Corrosion Resistance, Specialty Metal Fasteners | Tagged Alloy C276 for sulfuric acid, C276 bolts for sulfuric acid, c276 bolts for sulfuric acid corrosion resistance, c276 fasteners for sulfuric acid corrosion resistance, c276 for sulfuric acid resistance, c276 screws for sulfuric acid corrosion resistance, Hastelloy bolts for sulfuric acid, Hastelloy C276 for sulfuric acid, Hastelloy for sulfuric acid, sulfuric acid corrosion resistance bolts, sulfuric acid resistant bolts, sulfuric acid resistant fasteners, sulfuric acid resistant screws | Leave a comment

Monel K500 Bolt for Salt Water Corrosion

Posted on May 15, 2018 by dean

Q: We have some machinery operating in salt fog with sea spray as well. Salt corrosion is an issue but most importantly I need bolts with a yield strength over 100ksi. Any thoughts? A: For this environment you have two options. First, with a yield strength of 110ksi I’d suggest … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Alloy K500 for salt air corrosion resistance, Alloy K500 for salt air resistance, Alloy K500 for salt spray corrosion resistance, Alloy K500 for sea spray corrosion resistance, Monel for resistance to salt air corrosion, Monel for resistance to sea spray corrosion, Monel for resistance to seaspray corrosion, Monel for sea spray resistance, Monel for seaspray resistance, Monel K500 for sea spray corrosion resistance, Monel K500 for seaspray corrosion, Resistance to salt air corrosion, Resistance to sea spray corrosion, Resistance to seaspray corrosion | Leave a comment

Hastelloy C276 Bolts – Sulfuric Acid Condensation

Posted on May 11, 2018 by dean

Q: I have a situation where I’m not only dealing with a hot steam environment which can reach 700F but there is also sulfuric acid condensation that can form during cool down periods. Are their any materials that can handle heat and corrosion? A: Typically when dealing with sulfuric acid … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged C276 bolts for sulfuric acid corosion resistance, C276 bolts for sulfuric acid corrosion, C276 bolts for sulfuric acid resistance, c276 for sulfuric acid resistance, Hastelloy bolts for sulfuric acid corrosion, Hastelloy bolts for sulfuric acid resistance, Hastelloy C276 bolts for corrosion, Hastelloy C276 bolts for sulfuric acid, Hastelloy C276 bolts for sulfuric acid condensation, Hastelloy C276 for sulfuric acid, Hastelloy fasteners for sulfuric acid, Hastelloy fasteners for sulfuric acid condensation, Hastelloy fasteners for sulfuric acid corrosion, hastelloy fasteners for sulfuric acid resistance | Leave a comment

Hastelloy C276 Bolts for Sour Gas

Posted on May 10, 2018 by dean

Q: I’m having trouble with corrosion of our bolts in a sour gas well environment and we are currently using a super duplex stainless steel. Can you help me with a bolting material that would be improved? A: Hastelloy C276 bolts are ideal for sour gas environments and would be … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged bolts for H2S resistance, bolts for sour gas, bolts for sour gas resistance, C276 bolts for H2S, C276 bolts for H2S resistance, C276 bolts for sour gas, C276 for H2S resistance, C276 for sour gas, Hastelloy bolts for H2S, hastelloy bolts for sour gas, Hastelloy C276 for sour gas, Hastelloy for sour gas | Leave a comment

PTFE Screws for Laboratory Corrosion

Posted on May 9, 2018 by dean

I’m running some laboratory testing in a mixed acid environment and would like to use a corrosion resistant polymer as apposed to a metal. I’ve tried PEEK screws but am still struggling a bit with some acids. Is there anything better? PEEK screws provide reasonable corrosion resistance to most acids … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, Technical Questions | Tagged FDA approved polymer fasteners, polymer corrosion resistant fasteners, polymer screws for acid resistance, PTFE acid resistant fasteners, PTFE acid resistant screws, PTFE corrosion resistant fasteners, PTFE corrosion resistant screws, PTFE fasteners for acid resistance, PTFE fasteners for corrosion, PTFE for corrosion, PTFE screws for acid resistance, screws for laboratory acids | Leave a comment

Coastal Marine Corrosion of Bolts

Posted on May 8, 2018 by dean

Q: I’m running a coastal power operation and am having some corrosion on my stainless steel bolts that are outside. Can salt air do that? And any suggestions on a material. I need high volume so I need to go with something economic. A: Salt air can cause corrosion. If … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged 2057 screws for salt corrosion, 2507 bolts for salt air corrosion, 2507 bolts for salt corrosion, Bolts for salt air corrosion, Duplex 2507 for salt air corrosion, Duplex 2507 for salt corrosion, Duplex Steel for Salt Air corrosion, fasteners for salt air corrosion, Screws for salt air corrosion | Leave a comment

Duplex Washers for Salt Corrosion and Magnetic Needs

Posted on April 30, 2018 by dean

I’m looking for a non-corroding and magnetic washer for use in a salt water environment. Specifically, we plan to weld this washer onto a 316 stainless basket so that it can be attached to a magnet. Currently we are using 302 stainless baskets, which are magnetic enough to attach to … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Duplex washers for salt water resistance, magnetic washers, salt water resistant washers, seawater resistant washers, washers for resistance to salt water, washers for resistance to seawater, Washers for salt water corrosion, Washers for salt water corrosion resistance | Leave a comment

Titanium Fasteners for Sea-Water & Galvanic Corrosion

Posted on April 9, 2018 by dean

Q: I need a salt water corrosion resistant screw that will work well to fasten an aluminum housing for deep sea equipment. I am concerned about galvanic corrosion. What material should I consider? A: Since you are using fasteners in an ocean environment and in contact with aluminum you have … Continue reading →

Inconel 625 vs Hastelloy C276 in Hydrochloric Acid (HCl)

Posted on March 29, 2018 by dean

Q: We are altering the chemicals we use to regulate the pH level of our manufacturing process with hydrochloric acid. I’m using some Inconel 625 bolting – will this work in the HCl too? A: Inconel 625 bolts offer a high level of corrosion resistance for many acids, may work … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 625 for HCl, Alloy 625 for hydrochloric acid, C276 bolts for HCl, C276 bolts for hydrochloric acid, C276 fasteners for HCl, C276 fasteners for hydrochloric acid, C276 for HCl, Hastelloy bolts for HCl, Hastelloy bolts for hydrochloric acid, Hastelloy Fasteners for HCl, Hastelloy fasteners for hydrochloric acid, Inconel bolts for HCl, Inconel bolts for hydrochloric acid, Inconel Fasteners for HCl, Inconel fasteners for hydrochloric acid | Leave a comment

Monel 400 Bolts in Seawater / Stress Corrosion Cracking

Posted on March 27, 2018 by dean

Q: I have some machinery exposed to salt water as well has drastic temperature swings. I’m concerned about corrosion but also a material that will become brittle. A: Monel 400 bolts are an excellent material for salt water corrosion protection and is a go-to material for many marine applications. As … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Monel bolts for high temperatures, Monel bolts for saltwater, Monel bolts for saltwater corrosion, Monel bolts for seawater, Monel bolts for subzero temperatures, Monel fastener for saltwater corrosion, Monel fasteners for seawater, Monel for seawater, Monel for stress corrosion craking | Leave a comment

Titanium vs Monel bolts in stagnant salt water

Posted on March 20, 2018 by dean

Q: I’m dealing with a stagnant seawater situation. I’ve tried Monel 400 bolts because of its salt water resistance but am experiencing mild pitting corrosion. Any material that would fair better? A: Monel 400‘s only Achilles heel in terms of salt water situations usually occurs in stagnant waters where is … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Bolts for stagnant salt water, Bolts for stagnant sea water, Fasteners for salt water, Fasteners for stagnant salt water, FAsteners for stagnant sea water, Monel for salt water corosion, monel for seawater corrosion, salt water corrosion, Titanium for stagnant salt water, Titanium for stagnant sea water | Leave a comment

Monel Fastners for HF Contaminated Industrial Water

Posted on March 19, 2018 by dean

Q: I have a process where I’m experiencing corrosion from my industrial water system. I’ve tried Hastelloy C276 bolts but they are corroding much faster than I would expect. The water only has low levels of Hydrofluoric Acid (HF). Any ideas would be great. A: Hydrofluoric acid is an unusual … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged bolts for HF, bolts for hydrofluoric acid, fasteners for HF, fasteners for hydrofluoric acid, Monel bolts for HF, Monel bolts for hydrofluoric acid, Monel fasteners for HF, Monel fasteners for hydrofluoric acid, Monel for HF, monel for hydrofluoric acid corrosion, Monel for hydrofluoric acid resistance | Leave a comment

Titanium vs Super Duplex Bolts in Chlor-Alkali

Posted on March 15, 2018 by dean

Q: I’m running a chlor-alkali process and have been using Duplex 2507 bolts. I choose them for their yield strength and corrosion resistance but am still having issues with the chlorine. Ideas? A: Many chlor alkali processes use Titanium fasteners for its combination of high strength and chlorine resistance. Grade … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged Bolts for chlor-alkali, Bolts for chlorine corrosion, chlor-alkali bolts, chlor-alkali fasteners, Chlorine corrosion, Duplex 2507 for chlor alkali, Duplex bolts for chlor alkali, Duplex for chlor alkali, Duplex Steel for chlor alkali, Fasteners for chlor-alkali, Fasteners for chlorine corrosion, Titanium bolts for chlor alkali, Titanium for chlor alkali | Leave a comment

High Strength Fasteners for Hydrochloric Acid (HCl)

Posted on March 5, 2018 by dean

Q: I’m in need of a high strength fastener that can withstand moderate concentrations of hydrochloric acid (HCl) 25%? Can I use Hastelloy Bolts? I need a bolt that can handle a yield of about 100ksi and temperatures around 100F. A: Hastelloy bolts are definitely ideal in this concentration of … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 925 for hydrochloric acid, Bolts for Hydrochloric acid, Hastelloy C276 in hydrochloric acid, Incoloy 925 bolts, Incoloy 925 bolts in hydrochloric acid, Incoloy for hydrochloric acid, Inconel, Inconel 718 bolts | Leave a comment

Monel 400 Bolts for Caustic Solutions?

Posted on February 20, 2018 by dean

Q: I’m using a caustic soda solution to remove sulfur in a petroleum refinery. The steel bolts are NOT cutting it. Any suggestions? I don’t have a huge budget, so I’m hoping I don’t need Hastelloy or Tantalum fasteners? A: Nope…You don’t need anything that highly priced. For this situation … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Monel bolts for caustic soda, Monel bolts for petroleum refinery, Monel for caustic soda, monel for caustic solutions, Monel for petroleum refinery, monel for reboilers, monel for stripping towers | Leave a comment

Alloy 20 Bolts for Sulfuric Acid (H2SO4)

Posted on February 20, 2018 by dean

Q: I’m running a cotton mercerizing process that is being altered to utilize sulfuric acid. I didn’t realize how corrosive using sulfuric acid (H2So4) is on my fasteners. Any ideas on how to protect my bolts. Not super hot, just corrosive. A: Alloy 20 bolts are a good choice for … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged alloy 20 bolts in sulfuric acid, Alloy 20 for sulfuric acid, Bolts for cotton mercerizing, Bolts for H2SO4, Bolts for Sulfuric acid, Fasteners for cotton mercerizing, Hastelloy for sulfuric acid | Leave a comment

Corrosion Resistant Fasteners for H2SO4 & Nitric Acid

Posted on February 14, 2018 by dean

Q: I’m producing nitrobenzene to be used in dye manufacturing. The nitrobenzene is prepared by the nitration of benzene with a mixture of concentrated sulfuric acid, water, and nitric acid. I’ve tried Hastelloy C276 but its not working so well. A: Hastelloy C276 works very well in sulfuric acid which … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged acid resistant bolts, acid resistant fasteners, fasteners for nitric acid, fasteners for nitrobenzene, fasteners for oxidizers, fasteners for sulfuric acid, Hastelloy C2000 for nitric acid, hastelloy C276 in nitric acid, hastelloy C276 in sulfuric acid | Leave a comment

Titanium or AL6XN Fasteners for Salt Water & Acids

Posted on February 12, 2018 by dean

Q: We’re setting up a salt brine application for a chemical project. There may be some minimal exposure to some acids. Can I uses titanium bolts? A: Titanium Gr2 and Titanium Gr5 (6Al-4V) fasteners are excellent for almost all salt related environments, but here since you may have exposure to … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Al-6XN for salt brines, AL6xn chloride resistance, AL6XN for brines, AL6XN for salt brines, Fasteners for Salt brines, Fasteners for salt corrosion resistance, Titanium fasteners in salt brines, Titanium for salt bring | Leave a comment

Bolts for Hydrofluoric and nitric acid: Hastelloy & Monel

Posted on January 26, 2018 by dean

Q: I’m running a chemical cleaning process on stainless steel to remove the oxides and to enrich the chromium depleted areas again surface. It’s an acid pickling process, where mixtures of hydrofluoric acid (HF) and nitric acid (HNO3) are used. I’ve tried Hastelloy C276 bolting on my tanks because I thought … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 400, Alloy C2000, bolts for acid pickling, bolts for HF, bolts for hydrofluoric acid, bolts for nitric acid, bolts for steel pickling, fasteners for acid pickling, fasteners for HF, fasteners for hydrofluoric acid, fasteners for nitric acid, fasteners for steel pickling, hastelloy C2000, Monel | Leave a comment

Hastelloy: Fasteners for phosphoric and sulfuric acid process

Posted on January 23, 2018 by dean

Q: I’m using a pretty corrosive wet process to produce phosphoric acid. It involves taking phosphate rock and the addition of concentrated (93%) sulfuric acid in a series of well-stirred reactor. Any ideas on bolting that won’t corrode my bolts and fasteners? A: Since your process is exposed to both … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Alloy C276, corrosion resistance, Hastelloy Bolts, Hastelloy C276, phosphoric acid, Phosphoric acid corrosion, Sulfuric Acid, Sulfuric Acid Corrosion | Leave a comment

Bolts for Steel Pickling in HCl: Hastelloy and Tantalum

Posted on January 22, 2018 by dean

Q: I’m using HCl in a pickling process and have used Hastelloy C276 bolts to protect my equipment but am still having corrosion issues. Any ideas? A: In pickling processes ferric chloride is created which is a strong oxidizer and most pickling process are at elevated temperatures – Hastelloy C276 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy C2000, Alloy C276, Hastelloy, Hastelloy Bolts, hastelloy C2000, Hastelloy C276, Hastelloy Screws, HCl, HCl Corrosion, Hydrochloric Acid, hydrochloric acid corrosion, Hydrochloric acid resistance, steel pickling | Leave a comment

Hastelloy C276 Fasteners for Flue Gas Desulfurization Scrubbers

Posted on January 18, 2018 by dean

Q: I’m operating a FGD (Flue Gas Desulphurization) plant and am experiencing some mild corrosion on my scrubber bolting. I’m currently using Incoloy 825 bolts. It’s mild corrosion but non-the-less I’d like to have it cleared up before I get additional issues. Any suggestions? A: Since scrubber liquids and gases … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 825, Alloy C276, FGD, FGD scrubber corrosion, FGD slurry corrosion, flue gas corosion resistance, flue gas desulfurization, Hastelloy C276, Incoloy 825, Inconel, Sulfuric Acid, Sulfuric Acid Corrosion, sulfuric acid protection | Leave a comment

PEEK Screws for Steam & Radiation Sterilization Processes

Posted on January 15, 2018 by dean

Q: I have a question regarding a type of fastener that can handle sterilization. What I need is a polymer if possible that can handle both steam and radiation sterilization processes, but doesn’t leach into my process. Contamination is an issue. A: You can definitely use a polymer for this … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, High Temperature Resistance, Technical Questions, Ultra Purity | Tagged Hydrolysis resistance, PEEK, PEEK Screws, PTFE fastener, radiation resistance, steam resistance, Sterilization process, Sterlization resistance | Leave a comment

Over-sizing nuts to compensate for coated bolts

Posted on January 8, 2018 by dean

Q: We have a corrosive application and we are debating on using coated carbon steel bolts and nuts or a solid corrosion resistant alloy. Obviously the coatings cost a lot less but we are unsure about how the coatings affect mechanical strength. A: Coated bolts and nuts are typically undersized … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Bolts, coated bolts, Corrosion, corrosion resistant bolts, nuts, over-sized nuts, over-sizing nuts | Leave a comment

Hastelloy vs Tantalum Bolts for Sulfuric Acid Corrosion in Lithium Extraction

Posted on January 3, 2018 by dean

Q: I’m running a lithium extraction process where a mineral called spodumene is roasted in a mixture of sulphuric acid (95-97%) at at about 150°C to form lithium sulfate. I’ve to use Hastelloy C276 for some process equipment but I’m still experiencing corrosion. Please help. A: Hastelloy C276 bolts typically … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy C276, H2SO4, Hastelloy, Hastelloy C276, high temperature H2SO4, high temperature sulfuric acid, hot acid corrosion, Hot Acids, Hot Sulfuric Acid, Lithium Extraction, spodumene, Sulfuric Acid, Sulfuric Acid Corrosion, tantalum | Leave a comment

Galvanic corrosion between Inconel fasteners and Monel in seawater

Posted on December 28, 2017 by dean

Q: I am considering using Inconel 718 fasteners with a Monel K-500 flange in seawater. I’m concered as Inconel is the more anodic of the two and is also has a smaller surface area. Would this cause galvanic corrosion? A: This is a great question. In this case if you plan … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 500, Alloy 718, Alloy K500, galvanic compatibility, Galvanic Corrosion, galvanic corrosion in seawater, Inconel, Inconel 718, Monel 500, Monel K500, seawater corrosion | Leave a comment

Hastelloy fasteners for HCL & H2SO4 in Municipal Waste Incinerator

Posted on December 27, 2017 by dean

Q: I’m running a municipal solid waste incinerator and am having trouble corrosion from a combination of hydrochloric acid and sulfuric acid that is derived from chloride and sulfur containing compounds in the waste fuel stream. I was using Duplex steel bolts for the chloride corrosion but they aren’t holding up … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged H2SO4 corrosion, HCk, HCl Corrosion, HCL resistance, Hydrochloric Acid, Hydrochloric acid resistance, incinerator corrosion, municipal solid waste incinerator, municipal waste, municipal waste incinerator, solid waste incinerator, Sulfuric Acid Corrosion, sulfuric acid corrosion resistance, Sulfuric Acid Resistance, waste incinerator | Leave a comment

Bolts for municipal waste incinerator: Hastelloy protects from HCl corrosion

Posted on December 12, 2017 by dean

Q: I’m running a municipal solid waste incinerator and am having trouble with corrosion from a combination of hydrochloric acid and sulfuric acid that is derived from chloride and sulfur containing compounds in the waste fuel stream. I was using Duplex steel bolts for the chloride corrosion but they aren’t holding … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy C276, Bolts, chloride condensation, H2SO4, Hastelloy, Hastelloy C276, HCl, Hydrochloric Acid, incinerator, municipal waste, Nickel Alloy, screws, solid waste incinerator, Sulfuric Acid, waste fuel stream | Leave a comment

PEEK screws for high temperature to 400F & corrosion resistance

Posted on November 27, 2017 by dean

Q: I’m designing laboratory equipment that will be utilized at 325-400F and I need screws that have immunity to organics and low concentrations of acids, as well be FDA approved. Would that be a ceramic? A: You probably don’t want a ceramic screw. Though they are corrosion resistant and offer … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, High Temperature Resistance, Material, Technical Questions, Ultra Purity | Tagged acid corrosion, ceramic, FDA approved, High Temperature, organic corrosion, PEEK | Leave a comment

Hastelloy bolts for hydro-treating with sour gas – H2S

Posted on November 16, 2017 by dean

Q: I’m running a hydro-treating process that is running at 350-390°C where we’re producing H2S and NH3. Any ideas on a bolt that can handle the temperature and chemicals? A: In this type of process you having to deal with high temperatures and the formation of sulfuric acid (H2SO4) from the H2S especially … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged Alloy C276, H2S, Hastelloy, Hastelloy C276, Hydro-treating, NH3, Oil Corrosion, sour gas, Sulfuric Acid | Leave a comment

Duplex 2507 bolts for high strength application in salt air

Posted on November 15, 2017 by dean

Q: I have a high strength application that requires resistance to damp salt air and occasional sea splash, I’m using Monel 400 but it’s not holding up the the 75ksi of yield I need. Lots of broken bolts? Is is corrosion or strength? Thoughts? A: Your issue isn’t the corrosion. … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 400, Alloy K500, Corrosion, Duplex 2507, Duplex Steel, Monel, Monel 400, Monel K500, salt water, salt water corrosion, sea water corrosion, seawater | Leave a comment

AL6XN vs Monel bolts for salt water and marine use

Posted on November 14, 2017 by dean

Q: Is AL6XN a steel or nickel alloy? Trying to figure out if it would perform as well as Monel in seawater. A: To answer your first question, AL6XN bolts are actually both a nickel and a steel alloy. AL6XN is often described as a high nickel content stainless alloy. Though … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged AL-6XN, AL6XN, Alloy 400, Corrosion, Crevice Corrosion, Monel, Monel 400, pitting, pitting corrosion, salt water, salt water corrosion, sea water corrosion, seawater, stagnant salt water, stagnant water | Leave a comment

Incoloy 825 vs Hastelloy C276 for Sour Gas

Posted on November 13, 2017 by dean

Q: I need bolts for a well pump exposed to sour gas? I’ve currently use Incoloy 825 bolts which works reasonably well, but I’m wondering if there is a better choice that is more economical and could offer equal or better corrosion resistance – any ideas? A: A great nickel alloy bolt … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 825, Alloy C276, Corrosion, H2S, Hastelloy, Hastelloy C276, Incoloy, Incoloy 825, sour gas, sour gas well | Leave a comment

Bolt resistant to sodium hypochlorite with 80ksi yield strength

Posted on November 7, 2017 by dean

Q: I’m looking for guidance on fasteners with good resistance exposure to sodium hypochlorite. The material would need to be bleach-resistance, but also have a tensile yield strength of over 80ksi.

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners, Technical Questions | Tagged bleach, bleach corrosion, sodium hypochlorite, Titanium, titanium gr 2, Titanium gr 5, Titanium Grade 2, Titanium Grade 5, waste water treatment | Leave a comment

Nickel Alloys Part 1: Moderate Corrosion

Posted on November 2, 2017 by dean

Nickel alloys are a special class of metals containing high levels of nickel (often greater than 20%). They play a key role in industry for their unique combination of high strength, corrosion resistance to harsh acids (like hydrochloric and sulfuric) and high temperature stability. This two-part newsletter will help summarize the distinct benefits of the … Continue reading →

Posted in Application, Blog, Corrosion Resistance, Material, Specialty Metal Fasteners | Tagged AL-6XN, AL6XN, Alloy 20, Alloy 400, Alloy K500, Carpenter 20, Corrosion, corrosion resistance, Monel, Monel 400, Monel K500, nickel, nickel alloys, Salt Water Resistance, Sea Water Resistance, Specialty Metals, Sulfuric Acid | Leave a comment

Hastelloy and Incoloy: Fasteners for Oil Field Corrosion

Posted on September 29, 2017 by dean

Oilfields are subjected to a diversity of corrosive elements including carbonic acids, sour gas (H2S), and fracking/stimulant acids such as hydrochloric and hydrofluoric acid. Naphthenic acids and simple organic acids are also found in crude oil extraction. In conjunction to acids, these environments contain sand and other abrasive elements which … Continue reading →

Posted in Application, Blog, Corrosion Resistance, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged fracking corrosion, Hastelloy, hastelloy C2000, Hastelloy C276, Hydrochloric Acid, Hydrochloric acid resistance, Hydrofluoric acid, Incoloy, Incoloy 825, Incoloy 925, oil & gas corrosion, Oil Corrosion, sour gas, sour gas well, sulfur corrosion, Sulfur corrosion resistance, sulfur-induced stress cracking | 1 Comment

High temperature bolt for sulfur & chloride gas corrosion resistance

Posted on September 6, 2017 by dean

Q: I have a high temperature application which is exposed to sulfur and chloride gasses. We’re operating at between 1200° and 1400°F. Any suggestions on a bolt material to consider? A: To deal with both sulfuric/chloride atmospheres as well as high temperatures, you may want to consider Incoloy 800HT bolts … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 600, Alloy 800, Alloy 800HT, Chloride corrosion resistance, creep resistance, creep resistance High Temperature Bolt, high temperature fastener, Incoloy, Incoloy 800, Incoloy 800HT, Inconel, Inconel 600, Sulfur corrosion resistance | Leave a comment

Non-metal fastener for hydrochloric acid

Posted on August 31, 2017 by dean

Q: I’m building some lab equipment what will be housing hydrochloric acid. I need a non-metal fastener that is corrosion resistant . Can you make a recommendation? A: In terms of a material that is not metallic and can handle hydrochloric acid, I would suggest either PTFE or PVDF. PTFE … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, Technical Questions | Tagged HCl, Hydrochloric Acid, Hydrochloric acid resistance, Polymer corrosion, polymers, PTFE, PVDF | Leave a comment

Choosing a Specialty Material Hose Clamp

Posted on August 29, 2017 by dean

small-worm-drive Extreme bolt offers hose clamps in Titanium and Hastelloy C276. This newsletter overviews the two styles available – worm drive and medium duty – as well as highlight what materials are best for your application. Titanium Grade 2 hose clamps are in stock and available in the sizes shown here. Hastelloy C276 hose clamps are custom made to order … Continue reading →

Posted in Blog, Corrosion Resistance, Lightweight, Specialty Metal Fasteners | Tagged Acid resistant hose clamp, Alloy C276, Corrosion resistant hose clamp, Hastelloy, Hastelloy C276, Hose clamp, Medium duty hose clamp, Titanium, Titanium Gr2, Titanium Grade 2, Worm drive, Worm drive hose clamp | Leave a comment

Corrosion resistance of Inconel 625 bolts vs Hastelloy C276

Posted on August 28, 2017 by dean

Q: Inconel 625 and Hastelloy C276 bolts seem to have similar Nickel content. Does this mean these fasteners will perform the same in a corrosive environment? A: Inconel 625 and Hastelloy C276 bolts do offer similar corrosion resistance but Hastelloy C276 has a slight edge in many acidic environements, especially … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Acid, Acidic, Acids, Alloy 625, Alloy C276, Corrosion, corrosion resistance, H2SO4, Hastelloy, Hastelloy C276, HCl, Hydrochloric Acid, Inconel, Inconel 625, Oxidizing, Sulfuric Acid | Leave a comment

Incoloy 925 bolts for sour gas & chloride application

Posted on August 16, 2017 by dean

Q: I have down hole application containing sour gas and high chloride levels. The temperature the bolts are exposed to is around 150F and I’m having trouble with cracking. I tried Super Duplex 2507 but am still having issues. Any ideas? A: Super Duplex 2507 does provide good resistance to … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 925, chloride corrosion, Duplex, Duplex 2507, H2S, Incoloy, Incoloy 925, sour gas, Stress Corrosion Cracking | Leave a comment

Bolt for hot hydrogen sulfide, CO2, hydrocarbons & salt water

Posted on August 9, 2017 by dean

Q: I need a material that will be suitable for oil and gas use. Submersion in hydrogen sulfide, carbon dioxide, hydrocarbons, salt water at temperatures up to 325F. Crevice corrosion has been a factor. Also need 170ksi min tensile strength. Plus we’d like to torque a 3/8-24 fastener to 50 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners, Technical Questions, Uncategorized | Tagged Alloy 718, bolt torque, Crevice Corrosion, hydrogen sulfide, Inconel, Inconel 718, oil & gas, salt water corrosion, sour gas | Leave a comment

Hastelloy C276 bolts in hot sulfuric acid

Posted on July 12, 2017 by dean

Inline image 1 Q: I was planning on using Hastelloy C276 in hot sulfuric acid. It would be approximately 50% concentration around 100F +/- 10 degrees. Will this be okay? I’m just concerned because I read that it cannot handle strong oxidizing environments and I’ll be using it in an application where its … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy C22, Alloy C276, Corrosion, ferric chloride, H2SO4, Hastelloy, Hastelloy C22, Hastelloy C276, Hot Sulfuric Acid, Nitric Acid, Oxidizer, Oxidizing, Sulfuric Acid | Leave a comment

Screws for high velocity salt water with debris

Posted on July 10, 2017 by dean

Q: I have a salt water environment with high velocities and a lot of debris including sand, dirt and particles. Because of the amount of debris, I’m concerned about what material would work best. A: Both Monel and Titanium can be good choices in this situation. Both perform extremely well … Continue reading →

Posted in Application, Corrosion Resistance, Specialty Metal Fasteners | Tagged Corrosion, erosion, high velocity seawater, Monel, Monel 400, Monel K500, rapid seawater, salt water, seawater, Titanium, titanium gr 2, Titanium gr 5, Titanium Grade 2, Titanium Grade 5 | Leave a comment

Titanium bolt for sodium hypochlorite corrosion

Posted on July 5, 2017 by dean

Q: I’m using sodium hypochlorite to control slime and bacteria formation in a power plant water system. It’s in about a 15% solution. I tried using Duplex fasteners thinking they are good with chlorides but I’m having corrosion issues. Any suggestions? A: I think the problem you have is the fact … Continue reading →

Posted in Application, Corrosion Resistance, Material, Specialty Metal Fasteners | Tagged chloride corrosion, Duplex, Duplex 2205, Duplex 2507, Gr 2, Gr5 oxidizer, hypochlorites, oxide film, Super Duplex, Titanium, Titanium Grade 2, Titanium Grade 5 | Leave a comment

Hastelloy C22 bolts for hydrochloric acid steel pickling

Posted on June 21, 2017 by dean

Q: We are running a steel pickling process are considering switching from a sulfuric acid process to hydrochloric acid. Our system currently uses Inconel 625 bolting. With this be sufficient? A: Inconel 625 is a good material for acid corrosion but for large system of hydrochloric acid, especially with the … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged C22, Hastelloy, Hastelloy C22, HCl, Hydrochloric Acid, Inconel, Inconel 625, metal pickling, steel pickling, tantalum | Leave a comment

Embrittlement of Tantalum bolts at high temperatures

Posted on June 8, 2017 by dean

Q: I chose Tantalum bolts for their corrosion resistance and high temperature capabilities and they are breaking. I’m running an application that fluctuates between 350 Celcius where there could be concentrated sulfuric acid contamination. I thought these would be excellent with high temperature acid exposure. Can you help me? I … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged Embrittled, Embrittlement, Inert Gas, Oxygen, tantalum, vacuum | Leave a comment

Zirconium fasteners exposed to downstream oxidizers

Posted on May 25, 2017 by dean

Q: I’m using zirconium fasteners in a sulfuric acid process but they are showing corrosion. I’m not sure why as I’m well below boiling and only using 40% concentration. There may be some downstream contaminants, but not much. Any ideas? A: It is most likely the contaminants that are causing … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 625, Alloy C22, Alloy C276, C22, C276, Corrosion, corrosion resistance, Ferric chlorides, H2SO4, Hastelloy, Hastelloy C22, Hastelloy C276, Inconel, Inconel 625, oxidizers, oxidizing media, Sulfuric Acid, tantalum, Zirconium | Leave a comment

Duplex bolts in sea water contaminated steam turbine

Posted on May 24, 2017 by dean

Q: I’m running a steam surface condenser which is installed on a steam turbine in a thermal power station. I’m using sea water that could be contaminated with chemical pollutants cooling water side of the condenser. Any ideas on a good fastener for the tubes and water boxes? A: Duplex 2205 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions | Tagged AL6XN, Alloy 2205, chloride corrosion, Corrosion, Crevice Corrosion, Duplex, Duplex 2205, High Temperature, pitting corrosion, salt water corrosion, Steam condenser, steam surface condenser, Stress Corrosion Cracking | Leave a comment

Tantalum vs Monel fasteners in hydrogen fluoride

Posted on May 22, 2017 by dean

Q: I’m using hydrogen fluoride used in a manufacturing process to make refrigerants. I know it’s very corrosive and have tried both hastelloy and inconel fasteners, which I thought were super corrosion resistant. What am I doing wrong because the acid is still eating them? Should I try Tantalum? A: … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged aeration, Alloy 400, Fluoride layer, Fluoride passive layer, Hastelloy, HF, Hydrofluoric acid, Monel, Monel 400, oxidizing salts, tantalum | Leave a comment

Duplex 2507: Bolts for geothermal drilling exposed to sulfur and salt

Posted on May 20, 2017 by dean

Q: I’m working on a on a geothermal energy drilling project. Carbon steel we’re currently using to bolt drilling components is failing from corrosion. We have corrosive an environment with high levels of sulfur and salt, as well as temperatures to 260C. Any suggestions? A: Super Duplex 2507 is often used … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 2507, Crevice Corrosion, Duplex, Duplex 2507, Geothermal drilling, geothermal exploration, geothermal well, Hastelloy, Inconel, pitting corrosion, SCC, Stress Corrosion Cracking, Super Duplex, Super Duplex 2507 | Leave a comment

Best bolts for Inconel 625 flanges

Posted on May 18, 2017 by dean

q: What bolting material should be used with Inconel 625 flanges? We used ASTM A193 Gr B7 however noticing some corrosion issues. A: This is a very common problem but to answer it accurately, it depends on the environment that your flanges see and also to a certain extent what … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Alloy 625, Alloy 718, B7, Corrosion, flange, Galvanic Corrosion, Inconel, Inconel 625, Inconel 718 | Leave a comment

Inconel bolts vs. Monel bolts. What’s the difference? Which is better?

Posted on May 11, 2017 by dean

inconel-monel-chart-copy They rhyme, are both used in extreme environments, and are both nickel metal alloys, but Monel and Inconel are actually very different. But how? Let’s start with basic chemistry. Monel is a nickel-copper alloy and Inconel is a nickel-chromium alloy. So what does that mean for your extreme application? We … Continue reading →

Posted in Application, Blog, Corrosion Resistance, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged Alloy 400, Alloy 625, Corrosion, hastelloy C2000, High Temperature, Hydrofluoric acid, Inconel, Inconel 625, Monel, Monel 400, saltwater corrosion, sea water corrosion | 1 Comment

Tantalum bolts for hot phosphoric acid

Posted on May 2, 2017 by dean

Q: I’m running a semiconductor wet chemical etching process that utilizes 85 % phosphoric acid at around 150-160°C. I need a material that can withstand this process. Super Duplex hex bolts are not cutting it. A: At that particular concentration and temperature high performance nickel alloys like Hastelloy C276 bolts … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy C276, C276, chemical etching, Hastelloy, Hastelloy C276, phosphoric acid, Semiconductor, tantalum, Zirconium | Leave a comment

Hastelloy C22 fasteners used in wet chloride

Posted on May 1, 2017 by dean

Q: I have a waste water purifying situation where I’m using chlorine to treat the water. In addition to the acidic solution produced the fastener will also experience high loads, so I’m also concerned with stress corrosion cracking. Currently Super Duplex 2507 is not doing the job. Any recommendations on … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners, Technical Questions | Tagged Alloy C22, C22, Crevice Corrosion, ferric chloride, Hastelloy C22, pitting corrosion, Stress Corrosion Cracking, Tensile Strength, wet choride | Leave a comment

Duplex 2205 and Hastelloy fasteners in pulp & paper digester

Posted on April 27, 2017 by dean

Q: We have a pulp & paper digester that is used to cook wood chips in an alkaline solution. The fasteners will be exposed to high temperatures and abrasive conditions. Any suggestions? A: Without knowing the specifics of your process, I can make two general material suggestions. Duplex 2205 fasteners are … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged alkaline, Alloy 2205, Alloy C276, Chlorides, Crevice Corrosion, Digester, Duplex 2205, Duplex Steel, Hastelloy, Hastelloy C276, pitting corrosion, Pulp & Paper, Pulp & paper digester, Stress Corrosion Cracking | Leave a comment

Hastelloy B2 vs B3 bolts: Whats the difference?

Posted on April 13, 2017 by dean

Q: Is there any advantage of using a Hastelloy B3 fastener over a B2 fastener? A: Both Hastelloy B2 and B3 fasteners provide good resistance to non-oxidizing acids, such as hydrochloric acid and sulfuric acid. The only advantages of Hastelloy B3 fasteners over B2, is that they offer enhanced thermal stability … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged Alloy B2, Alloy B3, corrosion resistant, cupric salt, ferric salt, Hastelloy, Hastelloy B2, Hastelloy B3, Hydrochloric Acid, oxidizing media, Sulfuric Acid | Leave a comment

Difference between Monel 400 and Monel K500 bolts

Posted on April 10, 2017 by dean

Q: I’m currently using Monel 400 hex head bolts in salt water. Should I be using K500? What’s the difference? A: Basically, Monel K500 is a precipitation hardened version of Monel 400. This means the material goes through a heat treating process that changes the alloy’s structural matrix to increase its tensile and … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged 400, Bolts, K500, Monel, salt water, sea water | Leave a comment

Titanium vs Monel: Bolts for stagnant sea water

Posted on April 7, 2017 by dean

Q: I have a seawater application where the water can be stagnant or polluted. Is Monel bolts the best choice? A: For stagnant seawater application we would usually suggest Titanium over Monel fasteners. Although Monel is very resistant to saltwater, it can experience pitting corrosion in stagnant water situations. There have … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Corrosion, Monel, seawater, Titanium | Leave a comment

Best flange for high pressure hydrochloric acid

Posted on March 24, 2017 by dean

weld-neck-flange Q: I have a high pressure application with HCl at fluctuating temperatures. Can you recommend the best flange to provide a safe secure joint? A: Hands down, the weld neck flange is best for these types of hazardous, high pressure applications. Weld neck flanges are easily identified by their long … Continue reading →

Posted in Corrosion Resistance, FAQs, High Strength, High Temperature Resistance, Technical Questions, Uncategorized | Tagged ASME flange, flange, High Pressure Flange, High Temperature Flange, Weld Neck Flange | Leave a comment

Best uses for a threaded flange

Posted on March 24, 2017 by dean

threaded-flange Q: When do you recommend to use a threaded flange? I need a flange that can be changed easily & frequently. A: After speaking with the customer, I found out that he has a pilot plant where he will be frequently changing parts. In this case a threaded flange is … Continue reading →

Posted in Corrosion Resistance, FAQs, High Strength, High Temperature Resistance, Lightweight, Non-Conductive, Specialty Metal Fasteners, Technical Questions, Ultra Purity, Uncategorized | Tagged dangerous application, flammable application, flange, pilot process, small pipe diameters, tapered pipe thread, threaded flange | Leave a comment

When to use a lap joint flange

Posted on February 13, 2017 by dean

lap-joint-flange Q: When is it best to use a lap joint flange? A: Lap joint flanges are good for very expensive materials like tantalum and zirconium and other specialty alloys like Hastelloy or Inconel due to reduced cost of sleeve vs solid flange. Lap joint flanges are unique in that they … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Lap Joint Flange | Leave a comment

PEEK and Vespel screws for non-conductive application

Posted on February 8, 2017 by dean

Q: Need to replace a standard steel washer with a non-conductive material. A: After speaking with this customer, I learned that he needed to replace a standard steel washer with a non-conductive material for a critical bolted joint. These washers needed to withstand 70°C temperatures while maintaining preload. He … Continue reading →

Posted in Corrosion Resistance, Engineered Polymer Fasteners, FAQs, Non-Conductive, Technical Questions | Tagged carbon fiber PEEK, creep, creep resistant, glass filled PEEK, PEEK, PEEK fastener, PEEK screw, polyimide, Vespel, vespel fastener, vespel screw | Leave a comment

Galvanic corrosion using Inconel bolts

Posted on February 8, 2017 by dean

Q: Can dissimilar (also called galvanic) corrosion occurs between Inconel bolts and regular carbon steel? A: Anytime you have dissimilar materials you have the potential for galvanic corrosion. For this to happen the materials need to be wet or in some kind of solution. If they are dry it’s … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners, Technical Questions | Tagged Carbon Steel, Corrosion, corrosion resistant, Galvanic Corrosion, Inconel, Inconel 625, Inconel 718, thread corrosion | Leave a comment

17-4 PH

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254 SMO

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310SS

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AL6XN

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A-286

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Alloy 20

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Alloy 330

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Alloy 926

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Aluminum 7075

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Duplex Steel

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Hastelloy

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Incoloy

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