中国 · GB

85

GB/T 1222:2007 — 弹簧钢

化学成分

元素minmax相似备注
C0.820.9
Cr0.25
Cu0.25May be specified by the purchaser and contract as 0.20 % maximum.May be specified by the purchaser and contract as 0.20 % maximum.
Mn0.50.8
Ni0.25
P0.035
S0.035
Si0.170.37

力学性能

热处理 / 状态屈服强度抗拉强度伸长率断面收缩率冲击功硬度
Wires  油淬火及回火≥980 ReL≥1130≥6 Lo = 100mm≥30
Wires  热轧HB ≤302 HBW