35crmo钢专用焊丝焊条碳 C :0.32~0.40硅 Si:0.17~0.37锰 Mn:0.40~0.70硫 S :允许残余含量≤0.035磷 P :允许残余含量≤0.035铬 Cr:0.80~1.10镍 Ni:允许残余含量≤0.030铜 Cu:允许残余含量≤0.30钼 Mo:0.15~0.25