forged grinding steel balls 1)Diameter:DIA25-150MM (2)Hardness:HRC50-65 (3)Ball High hardness,good wear resistant,unbreaka forged grinding steel balls1.Chemical composition:ItemCCrSiMnSPCuMoNiHardnessElement0.72-0.820.25-0.600.17-0.370.7-1.10≤ 0.035≤0.035≤0.1≤0.25≤0.1 55-652.Specification and Hardness of Forged Grinding BallNominal diameter(mm)Diameteical tolerance(mm)Weight of Singleof forging ...