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牌號:Y15Pb
標(biāo)準(zhǔn):GB/T 8731-1988
●化學(xué)成份:
碳 C :0.10~0.18
硅 Si:≤0.15
錳 Mn:0.80~1.20
硫 S :0.23~0.33
磷 P :0.05~0.10
鉛 Pb:0.15~0.35
●力學(xué)性能:
抗拉強(qiáng)度 σb (MPa):(熱軋)390~540; (冷拉)鋼材厚度或直徑 8~20時:530~755; >20~30時:510~735; >30時:490~685
伸長率 δ5 (%):(熱軋)≥22;(冷軋)≥7.0
斷面收縮率 ψ (%):(熱軋)≥36
硬度 :(熱軋)≤170HB;(冷拉鋼)152~217HB
●熱處理規(guī)范及金相組織:
●交貨狀態(tài):以熱軋或冷拉狀態(tài)交貨,交貨狀態(tài)應(yīng)在合同中注明。
