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| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Mo(％) |
|---|---|---|---|---|---|---|---|
| 0.03-0.10 | Max 0.50 | Max 0.50 | Max 0.015 | Max 0.015 | 14.0-17.0 | remaining | Max 0.15 |
| Al(%) | Other(%) | ||||||
| 1.10-1.35 | Fe:5.0-9.0,Nb+Ta 0.70-1.20 |
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 581 (≥) | 531 (≥) | 14 | 22 | 21 | Solution & Aging, Ann, Ausaging, Q+T | 421 |