Tag Archives: HCl Corrosion

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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Bolts for Steel Pickling in HCl: Hastelloy and Tantalum

Posted on January 22, 2018 by dean

Q: I’m using HCl in a pickling process and have used Hastelloy C276 bolts to protect my equipment but am still having corrosion issues. Any ideas? A: In pickling processes ferric chloride is created which is a strong oxidizer and most pickling process are at elevated temperatures – Hastelloy C276 … Continue reading →

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Hastelloy fasteners for HCL & H2SO4 in Municipal Waste Incinerator

Posted on December 27, 2017 by dean

Q:  I’m running a municipal solid waste incinerator and am having trouble corrosion from a combination of hydrochloric acid and sulfuric acid that is derived from chloride and sulfur containing compounds in the waste fuel stream. I was using Duplex steel bolts for the chloride corrosion but they aren’t holding up … Continue reading →

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