C15 C20 C22 XC18钢材
调质结构钢:C18 C20 C20E4 C20M2 C25 C25E4 C25M2 C30 C30E4 C30M2 C35 C35E4 C35M2 C40 C40E4 C40M2 C45 C45E4 C45M2 C50 C50E4 C55M2 C60 C60E4 C60M2 38Mn6 36Mn6 42Mn6 34CR4 34CrS4 37Cr4 34CrS4 37Cr4 37CrS4 41CR4 41CrS4 25CrMo4 25CrMoS4 34CrMo4 34CrMoS4 42CrMo4 42CrMoS4 50CrMo4 36CrNiMo4 36CrNiMo6 31CrNiMo8 51CrV6