ASTM M42
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 1.05 | 1.15 | ||
| Si | 0.15 | 0.65 | ||
| Mn | 0.15 | 0.40 | ||
| P | 0.030 | |||
| S | 0.030 | |||
| Cr | 3.50 | 4.25 | ||
| Mo | 9.00 | 10.00 | ||
| V | 0.95 | 1.35 | ||
| W | 1.15 | 1.85 | ||
| Co | 7.75 | 8.75 |
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