等级
|
C
|
Si
|
Mn
|
P
|
S
|
Mo
|
Cr
|
Ni
|
B
|
A
|
≤0.25
|
≤0.70
|
≤1.60
|
≤0.025
|
≤0.010
|
≤0.50
|
≤1.40
|
|
≤0.004
|
B
|
≤0.25
|
≤0.70
|
≤1.60
|
≤0.025
|
≤0.010
|
≤0.50
|
≤1.00
|
≤1.00
|
≤0.004
|
等级
|
硬度(HBW)
|
20℃AKV纵向J
|
A
|
350~400
|
提供
|
B
|
350~400
|
≥21
|
中国舞钢
WY
|
日本企标
JFE
|
瑞典标准
SSAB
|
德国企标
DILLIDUR
|
住友企标
SUMIHARD
|
WNM400
|
JFE-EH400A
|
HARDOX400
|
400V
|
K400
|