ISO 21CrMoV5-7
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.17 | 0.25 | ||
| Si | 0.04 | |||
| Mn | 0.40 | 0.80 | ||
| P | 0.030 | |||
| S | 0.030 | |||
| Cr | 1.20 | 1.50 | ||
| Mo | 0.65 | 0.80 | ||
| Ni | 0.60 | |||
| V | 0.25 | 0.35 |
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