ГОСТ Р9К5
Chemical composition(mass fraction)(wt.%)
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Mo(％) | V(%) | W(%) | Cu(%) | Co(%) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.90-1.00 | 0.20-0.50 | 0.20-0.50 | 0.20-0.50 | ≤0.030 | 3.80-4.40 | ≤0.60 | 3.80-4.40 | 2.30-2.70 | 2.30-2.70 | ≤0.25 | 5.00-6.00 |
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