化学元素成分：
|
C
|
Si
|
Mn
|
P
|
Cr
|
Mo
|
Ni
|
|
0.05%-0.17%
|
0.50%-0.80%
|
0.40%-0.65%
|
0.010%-0.012%
|
1%-1.5%
|
0.45%-0.65%
|
0.20%-0.25%
|
