C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Mo
|
Ni
|
0.28-0.4
|
0.2-0.8
|
0.6-1
|
≤0.03
|
≤0.03
|
1.4-2
|
0.3-0.55
|
0.85-1.15
|