条件 |
热处理或状态 |
抗拉强度 σb |
屈服点 σs |
断后伸长率或延伸率 δ |
断面收缩率 ψ |
A |
冷精轧 |
≥520 |
≥415 |
≥15 |
≥30 |
A |
退火 |
≥485 |
≥380 |
≥20 |
≥40 |
注:Condition A —— Annealed as a final heat treatment.
Material in Condition A may be given a final cold drawing for size control or finish, or both, slightly raising tensile strength.