Hastelloy C-22 is a nickel-chromium-molybdenum alloy with improved pitting, crevice corrosion, and stress corrosion cracking resistance. It resists the formation of grain boundary precipitates in the weld heat affected zone, making it suitable for use as-welded.
The chemical composition nickel Hastelloy C 22 is outlined in the following table.
| - | Ni | Cr | Mn | C | Mo | Si | Fe |
|---|---|---|---|---|---|---|---|
| Max | Bal | 22.5 | 0.50 | 0.015 | 14.5 | 0.08 | 6.0 |
| Min | - | 20.0 | - | - | 12.5 | - | 2.0 |
| - | Ultimate Tensile | Yield Strength (0.2% OS) | Elong. in 2 in. (50.8mm) or 4D min., % | R/A | Hardness |
|---|---|---|---|---|---|
| Min | 100 KSi | 45 KSi | 45 | ||
| Max | |||||
| Min | 690 MPa | 310 MPa | |||
| Max |
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