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| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) |
|---|---|---|---|---|---|---|
| Max 0.10 | 1.5-2.5 | Max 1.00 | Max 0.045 | Max 0.030 | 17.0-19.0 | 9.0-12.0 |
| Nb(%) | ||||||
| 10x％C≤1.2 |
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 658 (≥) | 224 (≥) | 42 | 21 | 13 | Solution & Aging, Ann, Ausaging, Q+T | 431 |