调质产品化学成分CMnNiCrMoCuVCE例:0.221.130.020.050.010.0430.42 10.00 20.00 30.00 40.00 50.00 60.00 碳当量=C+Mn/6+(Cr+Mo+)/5+(Ni+Cu)/15非调质产品化学成分CMnNiCrMoCuVCE例:0.221.130.020.050.010.0430.41 10.00 20.00 30.00 40.00 50.00 60.00 碳当量=C+Mn/6双斜孔座产品化学成分CSiMnNiCrMoVCE例:0.20.650.950.040.050.020.010.40 10.00 20.00 30.00