|
成分
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
V
|
Mo
|
Nb
|
|
熔炼分析
|
0.05~0.15
|
≤0.10
|
0.30~0.60
|
≤0.010
|
≤0.005
|
2.00~2.50
|
≤0.010
|
0.90~1.10
|
≤0.010
|
|
成品分析
|
0.04~0.15
|
≤0.10
|
0.25~0.63
|
≤0.010
|
≤0.005
|
1.95~2.60
|
≤0.010
|
0.87~1.13
|
≤0.010
|
|
Al
|
Ni
|
Cu
|
Ti
|
Sb*
|
Sn*
|
As*
|
[H]*
|
N*
|
O*
|
|
≤0.06
|
≤0.20
|
≤0.15
|
≤0.010
|
≤0.003
|
≤0.010
|
≤0.012
|
≤2PPm
|
≤80PPm
|
≤30PPm
|
|
≤0.06
|
≤0.25
|
≤0.15
|
≤0.010
|
≤0.003
|
≤0.010
|
≤0.012
|
≤2PPm
|
≤80PPm
|
≤30PPm
|
|
抗拉强度Rm(Mpa)
|
屈服点Rp0.2 MPa
|
A %
|
Z%
|
冷弯试验b=2a
|
-30℃夏比冲击功J注①
|
|
515~690
|
310～620
|
≥18
|
≥45
|
弯曲180°无裂纹注②
|
≥54（平均值）≥47（单个值）
|
