SUP7弹簧钢日本弹簧钢SUP7弹簧钢性能 材料名称： SUP7 　特性及适用范围： 　　SUP7是应用广泛的硅锰弹簧钢，强度、弹性和淬透性较 55Si2Mn稍高。适于铁道车辆、汽车拖拉机工业上制作承受较大负荷的扁形弹簧或线径在30mm以下的螺旋弹簧、也适于制作工作温度在250 ℃以下非腐蚀介质中的耐热弹簧以及承受交变负荷及在高应力下工作的大型重要卷制弹簧。 　化学成份： 　　碳 C ：0.56～0.64 硅 Si：1.50～2.00 　　锰 Mn：0.60～0.90 　　硫 S ：≤0.035 　　磷 P ：≤0.035 　　铬 Cr：≤0.35 　　镍 Ni：≤0.35 　　铜 Cu：≤0.25 　力学性能： 　　抗拉强度 σb (MPa)：≥1274(130) 　　屈服强度 σs (MPa)：≥1176(120) 　　伸长率 δ10 (%)：≥5 　　断面收缩率 ψ (%)：≥25 　　硬度 ：热轧,≤321HB;冷拉 热处理,≤321HB 　热处理规范及金相组织： 　　热处理规范：淬火870℃±20℃,油冷; 回火480℃±50℃(特殊需要时,±30℃)。 　　金相组织：回火屈氏体。 　交货状态：热轧钢材以热处理或不热处理状态交货，冷拉钢材以热处理状态交货。 SUP7荣创钢带0.2*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带0.3*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带0.4*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带0.5*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带0.6*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带0.7*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带0.8*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带1.0*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带1.2*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带1.3*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带1.4*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带1.5*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带1.6*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带1.7*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带1.8*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带2.0*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带2.2*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带2.5*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带2.6*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带2.8*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带3.0*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带3.5*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带4.0*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带4.5*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7荣创钢带5.0*160/180/200/262钢板1*(200MM-2.1M)*(1M-6M) SUP7