BT21
Chemical composition(mass fraction)(wt.%)
| C(％) | Si(％) | Mn(％) | Cr(％) | Ni(％) | Mo(％) | V(%) | W(%) | Co(%) | Other(%) |
|---|---|---|---|---|---|---|---|---|---|
| 0.60-0.70 | ≤0.40 | ≤0.40 | 3.50-4.25 | ≤0.40 | ≤0.70 | 0.40-0.60 | 13.5-14.5 | ≤1.00 | Cu≤0.20,Sn≤0.05 |
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