Tag Archives: C276

Zirconium fasteners exposed to downstream oxidizers

Posted on May 25, 2017 by dean

Q: I’m using zirconium fasteners in a sulfuric acid process but they are showing corrosion. I’m not sure why as I’m well below boiling and only using 40% concentration. There may be some downstream contaminants, but not much. Any ideas? A: It is most likely the contaminants that are causing … Continue reading →

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Tantalum bolts for hot phosphoric acid

Posted on May 2, 2017 by dean

Q: I’m running a semiconductor wet chemical etching process that utilizes 85 % phosphoric acid at around 150-160°C. I need a material that can withstand this process. Super Duplex hex bolts are not cutting it. A: At that particular concentration and temperature high performance nickel alloys like Hastelloy C276 bolts … Continue reading →

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Know Your Lock Nuts

Posted on February 2, 2017 by dean

lock-nut-chartA lock nut resists loosening from vibrations and torque. Specialty material lock nuts offer the ideal solution to many extreme applications environments. They combine the unique properties of specialty materials, with the secure locking feature of a lock nut to prevent failures in the field.

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Fasteners For Hydrochloric Acid (HCl)

Posted on April 25, 2016 by dean

While hydrochloric acid (HCl) is a common and critical industrial chemical, it often causes significant maintenance issues for fasteners. Due to elevated temperatures, fluctuating concentrations and permeation of its vapors, utilizing the correct material for your fasteners is key to withstanding this potent acid. This article will briefly review some … Continue reading →

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