UNS Pyromet 31
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.03 | 0.06 | ||
| Si | 0.20 | |||
| Mn | 0.20 | |||
| Cr | 22.00 | 23.00 | ||
| Ni | 55.00 | 58.00 | ||
| Mo | 1.70 | 2.30 | ||
| Co | ||||
| W | ||||
| Al | 1.00 | 1.70 | ||
| Cu | 0.60 | 1.20 | ||
| Ti | 2.10 | 2.60 | ||
| Fe | remaining | |||
| B | 0.003 | 0.007 | ||
| P | 0.015 | |||
| S | 0.015 |
