C
|
Si
|
Mn
|
Cr
|
W
|
Mo
|
Ni
|
其他
|
1.5-4
|
≤4
|
≤3
|
≤3
|
50-70
|
≤7
|
≤3
|
≤3
|
C
|
Cr
|
Ni
|
Si
|
W
|
≤1.5
|
≤3.0
|
5.0-7.0
|
≤1.0
|
70-85
|