GOST 03X21H21M4ΓБ
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.03 | |||
| Si | 0.60 | |||
| Mn | 1.80 | 2.50 | ||
| P | 0.030 | |||
| S | 0.020 | |||
| Cr | 20.00 | 22.00 | ||
| Ni | 20.00 | 22.00 | ||
| Mo | 3.40 | 3.70 | ||
| W | 0.20 | |||
| Ti | 0.20 | |||
| Nb | 15×C | 0.80 |
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