B.S. T.73
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.08 | |||
| Si | 0.20 | 1.00 | ||
| Mn | 0.50 | 2.00 | ||
| P | 0.035 | |||
| S | 0.025 | |||
| Cr | 17.00 | 19.00 | ||
| Ni | 9.00 | 12.00 | ||
| Mo | ||||
| Ti | 5×C | 0.50 | ||
| Cu | 0.50 |
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