round bar 5Cr8MoVSi/A8 Hot rolling round bar: Diameter 8mm---32mm Precisely-forged ... . 7Cr7Mo2V2Si (GB)Chemical Composition: C 0.74, Si 1.10, Mn 0.45, P≤0.030, S≤0.030, ... . 7Cr7Mo2V2Si (GB)Chemical Composition: C 0.74, Si 1.10, Mn 0.45, P≤0.030, S≤0.030, ... . 7Cr7Mo2V2Si (GB)Chemical Composition: C 0.74, Si 1.10, Mn 0.45, P≤0.030, S≤0.030, ... mold, extrusive mold and tensile mold round bar 5Cr8MoVSi/A8