B.S. BT1
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.70 | 0.80 | ||
| Si | 0.40 | |||
| Mn | 0.40 | |||
| Co | 1.00 | |||
| Cr | 3.75 | 4.50 | ||
| Mo | 0.70 | |||
| Ni | 0.40 | |||
| V | 1.00 | 1.25 | ||
| W | 17.5 | 18.5 | ||
| Cu | 0.20 | |||
| Sn | 0.05 |
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