C
|
Si
|
Mn
|
P
|
S
|
Ni
|
Cr
|
≤0.2
|
≤0.4
|
0.8~1.4
|
≤0.025
|
≤0.015
|
≤0.3
|
≤0.3
|
Mo
|
Cu
|
Nb
|
V
|
Ti
|
Alt
|
N
|
≤0.08
|
≤0.3
|
≤0.02
|
≤0.02
|
≤0.03
|
≥0.02
|
≤0.012
|