牌号 | C | Si | Mn | P | S | Nb | V | N |
A656Gr80 | ≤0.18 | ≤0.60 | ≤1.65 | ≤0.025 | ≤0.035 | 0.005 ~0.10 | 0.005 ~0.15 | ≤0.020 |
牌号 | σsu (Mpa) | σb (Mpa) | δ5 (%) |
A656Gr80 | ≥550 | ≥620 | ≥12 |