产品详情
C
|
Si
|
Mn
|
S
|
P
|
Cr
|
Ni
|
Cu
|
V
|
Mo
|
0.32~0.45
|
0.80~1.20
|
0.20~0.50
|
≤0.030
|
≤0.030
|
4.75~5.50
|
允许残余含量≤0.25
|
允许残余含量≤0.30
|
0.80~1.20
|
1.10~1.7
|
硬度
|
压痕直径
|
退火,≤235HB
|
≥3.95mm
|
布氏硬度
|
淬火温度,
|
冷却剂
|
洛氏硬度HRC不小于
|
≤235
|
790±15预热,1000(盐浴)或1010(炉控气氛)±6加热,保温5-15min空冷,550±6回火
|
|