鋼材級(jí)別 |
屈服點(diǎn) σs(MPa)不小于 |
抗拉強(qiáng)度σb(MPa) |
伸長(zhǎng)率σ% 不小于 |
碳 C |
錳 Mn |
硅 Si |
硫 S |
磷 P |
AH32 | 315 | 440-570 | 22 | ≤0.18 | 0.9-1.6 | ≤0.50 | ≤0.035 | ≤0.035 |
DH32 | ||||||||
EH32 | ||||||||
FH32 | ≤0.16 | 0.9-1.6 | ≤0.50 | ≤0.025 | ≤0.025 | |||
AH36 | 355 | 490-630 | 21 | ≤0.18 | 0.9-1.6 | ≤0.50 | ≤0.035 | ≤0.035 |
DH36 | ||||||||
EH36 | ||||||||
FH36 | ≤0.16 | 0.9-1.6 | ≤0.50 | ≤0.025 | ≤0.025 | |||
AH40 | 390 | 510-660 | 20 | ≤0.18 | 0.9-1.6 | ≤0.50 | ≤0.035 | ≤0.035 |
DH40 | ||||||||
EH40 | ||||||||
FH40 | ≤0.16 | 0.9-1.6 | ≤0.50 | ≤0.025 | ≤0.025 |