B.S. HR55
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.04 | 0.08 | ||
| Si | 0.50 | |||
| Mn | 0.20 | |||
| P | ||||
| S | 0.015 | |||
| Cr | 15.50 | 17.50 | ||
| Ni | 42.00 | 45.00 | ||
| Mo | 2.80 | 3.80 | ||
| Co | 2.00 | |||
| Ti | 1.10 | 1.30 | ||
| Fe | remaining | |||
| Al | 1.10 | 1.30 | ||
| Cu | 0.50 | |||
| B | 0.005 | |||
| Pb | 0.0015 | |||
| Bi | 0.0001 | |||
| Ag | 0.0005 | |||
| Zr | 0.01 | 0.04 |
