Reference list of alloy structural steel grades CHN AISI DIN JIS NF BS ISO 20Mn2 1320 20Mn5 SMn21 20M5 150M19 1221 30Mn2 1330 30Mn5 SMn24 32M5 150M28 35Mn2 1335 36Mn5 SMn1 35M5 150M36 40Mn2 1340 SMn2 40M5 1341 45Mn2 1345 46Mn7 SMn3 45M5 50Mn2 1052 50Mn7 55M5 20MnV 20MnV6 30Mn2MoW 27SiMn 27MnSi5 35SiMn 37MnSi5 38MS5 42SiMn 38MnSi4 38MS5 46MnSi4 20SiMn2MoV 25SiMn2MoV 37SiMn2MoV 40B 14B35 35B2 45B 50B46H 45B2 50B 14B50 40MnB 15B41 45MnB 15B48 50B44 20Mn2B 20MnMoB 80B20 15MnVB 20MnVB 40MnVB 20MnTiB 25MnTiBRE 20SiMnVB 15Cr 5015 15Cr3 SCr21 12C3 523A14 5115 523M15 15CrA 20Cr 5120 20Cr4 SCr22 18C3 527A19 683/11 18C4 527M20 20Cr4 20CrS4 30Cr 5130 28Cr4 SCr2 28C4 530A30 32C4 530A32 35Cr 5135 34Cr4 SCr3 38C4 530A36 683/8 37Cr4 3、3a、3b 40Cr 5140 38Cr4 SCr4 42C4 530A40 683/1 41Cr4 530M40 4、4a、4b 45Cr 5145 42Cr4 SCR5 45C4 50Cr 5150 50C4 En48 5152 38CrSi 12CrMo 4119 13CrMo44 12CD4 15CD2 15CrMo ASTM 15CrMo5 SCM21 15CD4.05 BS1653 A-387Gr.B 16CrMo44 20CrMo 4118 20CrMo5 SCM22 18CD4 CDS12 22CrMo4 20CD4 CDS110 30CrMo 4130 25CrMo4 SCM2 30CD4 CDS13 30CrMoA 32CrMo12 31CRMo12 35CrMo 4135 34CrMo4 SCM3 35CD4 78A37 683/1 4137 35CrMo4 C35ea C35eb 42CrMo 4140 41CrMo4 SCM4 40CD4 708M40 683/1 4142 42CrMo4 42CD4 708A42 3 709M40 12CrMoV 35CrMoV 35CrMoV5 12Cr1MoV 13CrMoV4.2 25Cr2MoVA 24CrMoV5.5 25Cr2Mo1VA 20CR3MoWVA 21CrVMoW12 38CrMoA1 6370(AMS) 34CrA1Mo5 SACM645 40CAD6.12 905M39 683/10 41CrA1Mo7 41CrA1Mo74 20CrV 6120 22CrV4 22CrV4 40CrV 6140 42CrV 42CrV4 50CrVA 6150 50CrV4 SUP10 50CV4 735A50 15CrMn 16MnCr5 16MC5 20CrMn 5120 20MnCr5 SMC21 20MC5 40CrMn 5140 SMC3 20CrMnSi 25CrMnSi SMK1 (大同制钢) 30CrMnSi 30CrMnSiA 35CrMnSiA SMK2 (大同制钢) 20CrMnMo 4119 20CrMo5 SCM23 40CrMnMo 4140 20CrMnTi SMK22 (大同制钢) 30CrMnTi 30MnCrTi4 20CrNi 3120 20NiCr6 20NC6 637A16 637M17 40CrNi 3140 46NiCr6 SNC1 35NC6 640A35 640M40 45CrNi 3145 45NiCr6 50CrNi 3150 12CrNi2 3115 14NiCr10 SNC21 10NC11 14NC11 12CrNi3 3310 13NiCr12 SNC22 10NC12 655A12 14NC12 655M13 20CrNi3 22NiCr14 20NC11 30CrNi3 28NiCr10 SNC2 30NC11 31NiCr14 30NC12 37CrNi3 35NiCr18 SNC3 35NC15 12Cr2Ni4 E3310 14NiCr18 12NC15 20Cr2Ni4 E3316 22NiCr14 20NC14 659A15 659M15 20CrNiMo 8620 20NiCrMo2 20NCD2 805A20 8720 21NiCrMo2 805M20 40CrNiMoA 4340 36NiCrMo4 SNCM8 35NCD5 817M40 683/1 9840 40NiCrMo6 40NCD3 816M40 4、4a、4b 45CrNiMoVA 4437 SNCM9 18Cr2Ni4WA 25Cr2Ni4WA