5.5mm rod Dia 5.5mm,6.5mm Grade H08A,Er50-6E Standard GB,JIS,ASTM,DIN, ... AISI,BS LF & VD forge;ISO&TUV appreoved 5 ... welding and so on. The main grade are H08A,ER50-6(E),H08Mn2SiA,H08MnA and so on. With million tons of ... ,ER50-G,EH14 and EM12K. GradeDia(mm)StandardChemical Composition % CSiMnPSNiCrCuH08A5.5,6.5GB/T3429-2002≤0.10≤0.030.35-0.60 ...