Alloy C22 is an improved alloy for use in a range of aggressive industrial environments. Alloy C22 has excellent resistance to pitting and crevice corrosion in oxidizing and acid chloride environments, and is practically immune to chloride stress corrosion cracking (SCC). Alloy C22 has superior weldability, and alloy C22 weld fillers are used to join other corrosion resistant alloys such as Alloy C-276 and AL-6XN® alloy.


C22 Forged Billet, C22 Plate, C22 Sheet, C22 Weld Wire

Common Trade Names

Alloy C22


  • Better overall corrosion resistance than Alloy C-276
  • Outstanding resistance to chloride pitting, crevice corrosion and stress corrosion cracking
  • Excellent resistance to oxidizing aqueous environments (wet chlorine and mixtures containing nitric acid and chloride ions)


  • Stack liners
  • Ducts
  • Dampers
  • Scrubbers
  • Heat exchangers
  • Reaction vessels
  • Evaporators