ASTM B 637 N07718
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.03 | |||
| Cr | 17.0 | 21.0 | ||
| Mo | 2.80 | 3.30 | ||
| Ni | 50.0 | 55.0 | ||
| Al | 0.20 | 0.60 | ||
| Nb | 4.75 | 5.50 | ||
| Fe | Bal | |||
| Si | 0.35 | |||
| Mn | 0.35 | |||
| P | 0.015 | |||
| S | 0.015 | |||
| B | 0.006 |
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