Tag Archives: Hastelloy bolts for sulfuric acid

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 →

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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 →

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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 →

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