45#模具钢20Cr 35crmo SKD6140cr调质料35CrMo 42CrMoA 1CR GCr1

45#模具钢20Cr 35crmo SKD6140cr调质料35CrMo 42CrMoA 1CR GCr1

45#模具钢20Cr 35crmo SKD6140cr调质料35CrMo 42CrMoA 1CR GCr1

45#模具钢20Cr 35crmo SKD6140cr调质料35CrMo 42CrMoA 1CR GCr1

45#模具钢20Cr 35crmo SKD6140cr调质料35CrIo 42CrMoA 1CR GCr15

45#模具钢20Cr 35crmo SKD6140cr调质料35CrMo 42CrMoA 1CR GCr15

金信床片3sg热处理小磨钢件6140cr/m390砂轮高硬度skd11淬火研磨