合金结构钢中硫、磷及残余铜、铬、镍含量

常用金属工程材料 | 铸铁、铸钢及锻钢 | 锻钢 | 锻件用结构钢的牌号和力学性能

钢类,代号,P(%)≤,S(%)≤,Cu(%)≤,Cr(%)≤,Ni(%)≤ 优质钢,-,0.035,0.035,0.30,0.30,0.30 高级优质钢,A,0.025,0.025,0.25,0.3 ...