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| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Mo(％) |
|---|---|---|---|---|---|---|---|
| Max 0.10 | Max 1.00 | Max 1.00 | Max 0.03 | Max 0.015 | 18.0-21.0 | remaining | Max 0.15 |
| B(%) | Ti(%) | Other(%) | |||||
| Max 0.008 | 2.0-2.6 | Fe:23.0-28.0,Nb+Ta 1.0-2.0 |
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 188 (≥) | 195 (≥) | 34 | 14 | 41 | Solution & Aging, Ann, Ausaging, Q+T | 311 |