Monthly Archives: August 2017 here

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

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small-worm-driveExtreme 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

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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

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Q: I’m working with boiling sulfuric acid and tried Alloy 20 for some of my bolting but am having corrosion. I’m confused as I thought that is what they are best for. Any suggestions. A: You are right Alloy 20 does typically perform very well in sulfuric acid and even … Continue reading

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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

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Q: I need high yield strength material what is the difference between MP35N and A286? Which is more economic? A: Overall MP35N is perhaps the highest yield strength bolt material available to industry with a typical yield of 250 ksi compared to A286’s 111 ksi; though it is extremely expensive. A286 … Continue reading

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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

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Q: I needed a lightweight fastener and tried aluminum but it can’t come close to sustaining the weight of my application. Can you suggest anything compatibly light weight that is stronger? A: Titanium mass is about 50% less than steel however when compared to aluminium is still about 60% heavier. … Continue reading

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Q: I need to attach an LNG cryogenic pump and need to make sure I use a material that can withstand temperatures of –120 °F as well as don’t embrittle when fluctuating back to room temperature. Any suggestions? A:  Monel K500 is a common choice for  cyrogenic fasteners. It can … Continue reading

Posted in Application, FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners, Technical Questions, Uncategorized | Tagged , , , , , , | Leave a comment