... 348 384 410 420 430 Alloy Steel: Chinese Standard:16Mn,20Mn,30Mn2,30Mn5,40Cr,Q345D,Q345E,Q390; ... ,38CrMoAl,40CrNiMo;48CrMo,5CrNiMo;Japanese Standard:SCM415,SCM420,SCM440,SNCM439,SNCM220; SACM645USA Standard:SAE4140,SAE4130,SAE9840,SAE4340,AISI4145H ... steel, Carbon steel. StandardANSI/ASTM/SUS/GB/DIN/EN/BSDiameterfrom 4mm to 500mmLength12m,11.8m,6m,5.8m ... -2.0%+0.8%, -1.8% 2013 High Quality Round bar