Tag Archives: H2S

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 , , , , , , , , | 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 →

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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 , , , , , , , , | Leave a comment