ASTM HP 9-4-25
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.24 | 0.30 | ||
| Si | 0.10 | |||
| Mn | 0.10 | 0.35 | ||
| Ni | 7.00 | 9.00 | ||
| Cr | 0.35 | 0.60 | ||
| Al | ||||
| Cu | ||||
| Ti | ||||
| Fe | ||||
| Mo | 0.35 | 0.60 | ||
| Co | 3.50 | 4.50 | ||
| V | 0.06 | 0.12 | ||
| P | 0.01 | |||
| S | 0.01 |
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