Tag Archives: Hastelloy bolts for sulfuric acid corrosion

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 →

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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 →

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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 →

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