... T1/1.3355 Hot rolling round bar: Diameter 8mm---32mm Precisely-forged round bar: Diam high speed steel round bar W18Cr4V/SKH2/T1/1 ... molds5. 7Cr7Mo2V2Si (GB)Chemical Composition: C 0.74, Si 1.10, Mn 0.45, P≤0.030, S≤0.030, ... molds5. 7Cr7Mo2V2Si (GB)Chemical Composition: C 0.74, Si 1.10, Mn 0.45, P≤0.030, S≤0.030, ... molds5. 7Cr7Mo2V2Si (GB)Chemical Composition: C 0.74, Si 1.10, Mn 0.45, P≤0.030, S≤0.030, ...