英国 · B.S.

685 A 57

BS 970-2:1988 — Specification for wrought steels for mechanical and allied engineering purposes. Requirements for steels for the manufacture of hot formed springs

化学成分

元素minmax相似备注
C0.550.6
Cr0.60.85
Cu0.35
Mn0.70.9
Ni0.4
P0.035
S0.035
Si1.21.6

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
扁钢,HB圆钢  退火  d = 40 mm 277