Titanium or Hastelloy Bolts for Sulfuric Acid?

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 is best used for corrosion resistance to chlorides and salt water. For sulfuric acid, Hastelloy C276 bolts would be a much more robust solution and will be your best option for corrosion resistance to sulfuric acid for most conditions. However to be certain we would need to know the temperature and concentration of your application.

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