B.S. NA20
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.04 | 0.10 | ||
| Si | 1.00 | |||
| Mn | 1.00 | |||
| P | ||||
| S | 0.015 | |||
| Cr | 18.00 | 21.00 | ||
| Ni | remaining | |||
| Mo | ||||
| Al | 1.00 | 1.80 | ||
| Cu | 0.20 | |||
| Ti | 1.80 | 2.70 | ||
| Fe | 1.50 | |||
| B | 0.0080 |
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