|
钢材级别
|
屈服点
σs(MPa)不小于
|
抗拉强度
σb(MPa)
|
伸长率σ%
不小于
|
碳
C
|
锰
Mn
|
硅
Si
|
硫
S
|
磷
P
|
|
A
|
235
|
400-520
|
22
|
≤0.21
|
≥2.5C
|
≤0.5
|
≤0.035
|
≤0.035
|
|
B
|
≤0.21
|
≥0.80
|
≤0.35
|
|||||
|
D
|
≤0.21
|
≥0.60
|
≤0.35
|
|||||
|
E
|
≤0.18
|
≥0.70
|
≤0.35
|
|
钢材级别
|
屈服点σs
(MPa)不小于
|
抗拉强度
σb(MPa)
|
伸长率σ%
不小于
|
碳
C
|
锰
Mn
|
硅
Si
|
硫
S
|
磷
P
|
|
A32
|
315
|
440-570
|
22
|
≤0.18
|
≥0.9-1.60
|
≤0.50
|
≤0.035
|
≤0.035
|
|
D32
|
||||||||
|
E32
|
||||||||
|
F32
|
≤0.16
|
≤0.025
|
≤0.025
|
|||||
|
A36
|
355
|
490-630
|
21
|
≤0.18
|
≤0.035
|
≤0.035
|
||
|
D36
|
||||||||
|
E36
|
||||||||
|
F36
|
≤0.16
|
≤0.025
|
≤0.025
|
|||||
|
A40
|
390
|
510-660
|
20
|
≤0.18
|
≤0.035
|
≤0.035
|
||
|
D40
|
||||||||
|
E40
|
||||||||
|
F40
|
≤0.16
|
≤0.025
|
≤0.025
|
