ASTM T1
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.65 | 0.80 | ||
| Si | 0.20 | 0.40 | ||
| Mn | 0.10 | 0.40 | ||
| P | 0.030 | |||
| S | 0.030 | |||
| Cr | 3.75 | 4.50 | ||
| Mo | ||||
| V | 0.90 | 1.30 | ||
| W | 17.25 | 18.75 | ||
| Co |
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