SAE8620H圆钢8620H批发0510-85367620SAE8620H执行标准:ASTMA304化学成份（***标准）碳C：0.18～0.238620h硅Si：0.15～0.35锰Mn：0.70～0.90硫S：允许残余含量≤0.035磷P：允许残余含量≤0.035铬Cr：0.40～0.60镍Ni：0.40～0.70铜Cu：允许残余含量≤0.030钼Mo：0.15～0.25力学性能抗拉强度σb(MPa)：≥980(100)屈服强度σs(MPa)：≥785(80)伸长率δ5(%)：≥9断面收缩率ψ(%)：≥40冲击功Akv(J)：≥47冲击韧性值αkv(J/cm2)：≥59(6)硬度：≤197HB试样尺寸：试样毛坯尺寸为15mm热处理淬火850℃,油冷;回火200℃,空冷。SAE8620H产地：SAE8620H宝钢—SAE8620H兴澄—SAE8620H抚顺SAE8620H外观：SAE8620H锻圆—SAE8620H扎圆—SAE8620H光圆SAE8620H长度：5米6米SAE8620H探伤：保二级SAE8620H无锡新富昌公司供应SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发SAE8620H圆钢8620H批发)