B.S. HR40
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.05 | 0.15 | ||
| Si | 0.40 | |||
| Mn | 1.00 | 2.00 | ||
| P | 0.040 | |||
| S | 0.030 | |||
| Cr | 19.00 | 21.00 | ||
| Ni | 9.00 | 11.00 | ||
| Mo | ||||
| Co | remaining | |||
| Ti | ||||
| Fe | 3.00 | |||
| W | 14.00 | 16.00 |
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