C |
Si
|
Mn
|
Cr
|
Mo
|
Cr
|
P
|
S
|
0.35-0.42
|
0.80-1.20
|
0.30-0.50
|
4.80-5.50
|
1.20-1.60
|
0.50-1.10
|
0.03
|
0.010以下
|