ASTM M44
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 1.10 | 1.20 | ||
| Si | 0.30 | 0.55 | ||
| Mn | 0.20 | 0.40 | ||
| P | 0.030 | |||
| S | 0.030 | |||
| Cr | 4.00 | 4.75 | ||
| Mo | 6.00 | 7.00 | ||
| V | 1.85 | 2.20 | ||
| W | 5.00 | 5.75 | ||
| Co | 11.00 | 12.25 |
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