KS STR31
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.35 | 0.45 | ||
| Si | 1.50 | 2.50 | ||
| Mn | 0.60 | |||
| P | 0.040 | |||
| S | 0.030 | |||
| Cr | 14.00 | 16.00 | ||
| Ni | 13.00 | 15.00 | ||
| Mo | ||||
| N | ||||
| W | 2.00 | 3.00 |
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