SAE A 268 25-4-4
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.025 | |||
| Si | 0.75 | |||
| Mn | 1.00 | |||
| P | 0.04 | |||
| S | 0.04 | |||
| Ni | 3.35 | 4.50 | ||
| Cr | 24.50 | 26.00 | ||
| Al | ||||
| Cu | 0.50 | |||
| Ti | ||||
| Fe | ||||
| N | 0.035 | |||
| Mo | 3.50 | 4.50 |
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