Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb Y15pb YY15pb 15pb Y15pb Y15pb牌号:Y15Pb
标准:GB/T 8731-1988
●化学成份:
碳 C :0.10~0.18
硅 Si:≤0.15
锰 Mn:0.80~1.20
硫 S :0.23~0.33
磷 P :0.05~0.10
铅 Pb:0.15~0.35
●力学性能:
抗拉强度 σb (MPa):(热轧)390~540; (冷拉)钢材厚度或直径 8~20时:530~755; >20~30时:510~735; >30时:490~685
伸长率 δ5 (%):(热轧)≥22;(冷轧)≥7.0
断面收缩率 ψ (%):(热轧)≥36
硬度 :(热轧)≤170HB;(冷拉钢)152~217HB
●热处理规范及金相组织:
●交货状态:以热轧或冷拉状态交货,交货状态应在合同中注明。