钢
类 等级 化学成份(质量分数)(%)
C Mn si P S Al Nb V
一般
强度
钢 A ≤O.22 ≥2.5C O.10~0.35 ≤O.04 ≤0.04
B ≤O.21 O.60~1.00
D ≤O.21 0.60~1.00 ≥O.015
E ≤O.18 O.70~1.20 ≥0.015
高
强
度
钢 AH32 ≤O.18 O.70~1.60 0.10~O.50 ≤O.04 ≤0.04 ≥O.015
DH32 O.90~1.60
EH32 O.90~1.60
AH36 0.70~1.60 O.015~O.050 O.03O~O.10
DHB6 0.90~1.60
EH36 O.90~1.60