Q: I have an application that is exposed to mainly chloride but has some other acid contamination. Can I still use titanium to protect for corrosion.
A: Though titanium fasteners are highly resistant to chloride – almost immune – they typically do not work well with many other mixed acid environments. Titanium protects from chloride and saltwater because the oxygen helps to regenerate its passive layer which is like a shield against corrosion. When you expose titanium to other mixed acids its passive protective layer can break down and expose the titanium to corrosion. For this type of situation, a more robust corrosion resistant alloy like Alloy 20 or Hastelloy C276 may be more suitable. Hastelloy C276 bolts will provide excellent resistance to both chlorides and harsh acids.
Hastelloy Bolts for Acid Contaminated Chloride
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