... 347 348 384 410 420 430 Alloy Steel: Chinese Standard:16Mn,20Mn,30Mn2,30Mn5,40Cr,Q345D,Q345E,Q390;42CrMo, ... 20CrMo,38CrMoAl,40CrNiMo;48CrMo,5CrNiMo;Japanese Standard:SCM415,SCM420,SCM440,SNCM439,SNCM220; SACM645USA Standard:SAE4140,SAE4130,SAE9840,SAE4340,AISI4145H,SAE4150 ... #,50#,60#;Japan Standard:S20C,S25C,S35C,S45C,S55C,S60C;US Standard:AISI1020,AISI1040,AISI1045,AISI1050;Europe Standard:CK15,C.22 ...