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 5.5mm rod B/T3429-2002 and internal ... ,ER50-G,EH14 and EM12K. GradeDia(mm)StandardChemical Composition % CSiMnPSNiCrCuH08A5.5,6.5GB/T3429-2002≤0.10≤0.030.35-0 ...