表面硬化结构钢:C10E C10R C15E C15R XC10 XC18 C16E C16R 17Cr3 17CrS3 28Cr4 28CrS4 16MnCr5 16MC5 16MnCrS5 16MnCrB5 20MnCr5 20MC5 20MnCrS5 10NiCr5-4 15NiCr13 16NCD13 16NiCr4 16NiCrS4 18NiCr5-4 20MoCr3 20MnCrS3 20MoCr4 20MnCrS4 17CrNi6-6 16CN6 18CrMo4 18CD4 18CrMoS4 22CrMoS3-5 18CrNiMo7-6 18CND6 14NiMo13-4 17NiCrMo6-4 17NiCrMoS6-4 20NiCrMo2-2 20NCD2 20NiCrMoS2-2 20NiCrMoS6-4 24CrMo13-6