成分
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
V
|
Mo
|
Nb
|
熔煉分析
|
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
|
抗拉強(qiáng)度Rm(Mpa)
|
屈服點Rp0.2 MPa
|
A %
|
Z%
|
冷彎試驗b=2a
|
-30℃夏比沖擊功J注①
|
515~690
|
310~620
|
≥18
|
≥45
|
彎曲180°無裂紋注②
|
≥54(平均值)≥47(單個值)
|