查标准就可以的C Si Mn S P Fe Ni Cr Ti Cu Nb+Ta 其它≤0.10 ≤0.50 2.50/3.50 ≤0.015 ≤0.03 ≤3.00 ≥67.00 18.00/22.00 ≤0.75 ≤0.50 2.00/3.00 ≤0.500.009 0.18 2.80 0.004 0.010 1.80 71.46 20.81 0.35 0.01 2.18 0.39
