AFNOR Z50CMNNb21-09-02Az
Chemical composition(mass fraction)(wt.%)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.45 | 0.55 | ||
| Si | 0.45 | |||
| Mn | 8.00 | 10.00 | ||
| P | 0.040 | |||
| S | 0.030 | |||
| Cr | 20.00 | 22.00 | ||
| Ni | 3.50 | 5.00 | ||
| Mo | ||||
| Nb/Ta | 1.80 | 2.50 | ||
| W | 0.80 | 1.50 | ||
| No | 0.40 | 0.60 |
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