... , 1.4034GB1299Spring Steel65Mn,55Si2Mn, 60Si2MnA,60Si2CrA,60Si2CrVA,50CrVA,etc GB1222Carbon tool steelT7, T8, T9, T10, T12, T8Mn,etc GB1298stainless steel1Cr13,2Cr13 ... , 12Cr1MoV, 25Cr2MoV,38CrMoAl,40Cr,etc GB3077high speed steelW6Mo5Cr4V, W18Cr4VM2 GB9943Carbon steel20, 35, 40, 50, 55, 60 ect GB699 W18Cr4V High speed steel Flat Bar