GOST 31X19H9MBБT
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.28 | 0.35 | ||
| Si | 0.80 | |||
| Mn | 0.80 | 1.50 | ||
| P | 0.035 | |||
| S | 0.020 | |||
| Cr | 18.00 | 20.00 | ||
| Ni | 8.00 | 10.00 | ||
| Mo | 1.00 | 1.50 | ||
| W | 1.00 | 1.50 | ||
| Ti | 0.20 | 0.50 | ||
| Nb | 0.20 | 0.50 |
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