Tag Archives: Hastelloy bolts for HCl corrosion

Hastelloy Bolts For 37% HCl at Room Temperature

Posted on May 1, 2020 by dean

C276-HCl IsoCorrosionQ: 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 →

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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 →

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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 →

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