ASTM HS 556
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.05 | 0.15 | ||
| Si | 0.20 | 0.80 | ||
| Mn | 0.50 | 2.00 | ||
| Ni | 19.00 | 22.50 | ||
| Cr | 21.00 | 23.00 | ||
| Al | 0.10 | 0.50 | ||
| Cu | ||||
| Ti | ||||
| Fe | remaining | |||
| Mo | 2.50 | 4.00 | ||
| Co | 16.00 | 21.00 | ||
| W | 2.00 | 3.50 |
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