What is the composition of Hastelloy c22?
HASTELLOY C-22 alloy (UNS N06022) is a well-known and proven nickel-chromium-molybdenum material whose main properties are resistance to oxidizing and non-oxidizing chemicals and protection against pitting, crevice corrosion, and stress corrosion cracking. Its high chromium content makes it much more resistant to oxidizing media than the series standard C-276 alloy, and it has excellent resistance to chloride-induced pitting, an insidious and unpredictable form of corrosion to which stainless steels are susceptible.
Like other nickel alloys, HASTELLOY C-22 alloy is extremely ductile, has excellent weldability, and is easily formed into industrial components. It is available in the form of plate, sheet, strip, billet, bar, wire, tube, and covered electrodes. Typical chemical process industry (CPI) applications include reactors, heat exchangers, and columns.
Nominal Composition
| Weight % | |
| Nickel | 56 Balance |
| Chromium | 22 |
| Molybdenum | 13 |
| Iron | 3 |
| Cobalt | 2.5 max. |
| Tungsten | 3 |
| Manganese | 0.5 max. |
| Silicon | 0.08 max. |
| Carbon | 0.01 max. |
| Vanadium | 0.35 max. |
| Copper | 0.5 max. |
