Tag Archives: Monel screws for hydrofluoric acid corrosion

PTFE and Monel Fasteners for Hydrofluoric Acid

Posted on April 20, 2020 by dean

Q: I need a material that is resistant to a small concentration of hydrofluoric acid at room temperature? Can you offer any suggestions? A: Two materials come to mind. First in terms of metal alloys Monel 400 bolts are resistant to most concentrations of hydrofluoric acid. If you prefer a … Continue reading →

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Monel Bolts Over Nickel 200 for Aqueous Hydrofluoric Acid

Posted on November 6, 2019 by dean

Q: I’m using aqueous Hydrofluoric acid in a silicon etching process but amy Nickel 200 bolts aren’t holding up. Is there a better material I can use? A: Nickel 200 fasteners are excellent for use in anhydrous hydrofluoric acid, but in the aqueous form of HF acid they offer limited … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Technical Questions | Tagged , , , , , , , , , , , , , , | Leave a comment