ASTM M30
Chemical composition(mass fraction)(wt.%)
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Mo(％) | V(%) | W(%) | Co(%) |
|---|---|---|---|---|---|---|---|---|---|
| 0.75～0.85 | 0.20～0.45 | 0.15～0.40 | ≤0.030 | ≤0.030 | 3.50～4.25 | 7.75～9.00 | 1.00～1.40 | 1.30～2.30 | 4.50～5.50 |
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