 Steel Classification Japan China USA UK Germany France Russia JIS GB AISI / SAE BS DIN NF ГОСТ Manganese Chromium Steel SMn420 20Mn2 1522 150M19 20Mn5 SMn433 30Mn2 1536 150M36 34Mn5 30Г2 Manganese Steel 35Mn2 35Г2 SMn438 40Mn2 1541 150M36 36Mn5 35Г2 40Г2 SMn443 45Mn2 1541 40Г2 45Г2 SMnC420 15CrMn 5115 16MnCr5 SMnC443 40CrMn 5140 SMn420H 1522H SMn433H SMn438H 1541H SMn443H 1541H SMnC420H SMnC443H SCr415H 15CrH 17Cr3 15Х 17CrS3 SCr420H 20Cr1H 5120H 17Cr3 20Х Structural Steel with Specified Hardenability Band SCr430H 5130H 34Cr4 34Cr4 34Cr4 30Х 5132H 34CrS4 34CrS3 34CrS4 SCr435H 5135H 37Cr4 37Cr4 37Cr4 35Х 37CrS4 34CrS4 37CrS4 SCr440H 40CrH 5140H 41Cr4 41Cr4 41Cr4 40Х 41CrS4 41CrS4 41CrS4 SCM415H 15CrMoH 4118H 15CrMo5 SCM418H 18CrMo4 18CrMoS4 SCM420H 20CrMoH 4118H 708H20 18CrMo4 SCM435H 4135H 34CrMo4 34CrMo4 34CrMo4 4137H 34CrMoS4 34CrMoS4 34CrMoS4 SCM440H 42CrMoH 4140H 42CrMo4 42CrMo4 42CrMo4 4142H 42CrMoS4 42CrMoS4 42CrMoS4 SCM445H 4145H 4147H SCM822H R SNC415H SNC631H SNC815H 12Cr2Ni4H 655H13 15NiCr13 Vc= π×Dm×n 8617H 805H17 SNCM220H 20CrNiMoH 8620H 805H20 21NiCrMo2 20N CD 2 Technical Information 8622H 805H22 SNCM420H 20CrNi2MoH 4320H 20NiCrMoS6-4 R9