C
|
Si
|
Mn
|
P
|
S
|
Ni
|
≤0.18
|
≤0.55
|
≤1.6
|
≤0.02
|
≤0.015
|
≤0.7
|
Cr
|
Cu
|
Nb
|
V
|
Ti
|
Als
|
≤0.3
|
≤0.3
|
0.015~0.06
|
0.02~0.2
|
0.010~0.03
|
≥0.015
|