Our grinding ball:1)Dia.:10~130mm,2)High Hardness &Low Breakage,3)Good wear-Resistance, ... -ballsForged Grinding ballsA) Diameter: 10~130mmB). HardnessHigh Cr : Surface HRC 58-65Low Cr : Surface HRC 45-50Forged ball: HRC 50~60C). Characteristics ... ,Si≤1.0, Mn≤1.5, Cr: 10~28, Mo ≤1.0, P≤0.10, S≤0.08.Low Cr: C:2 ... : 1.0~2.2, Mo ≤1.0, P≤0.10, S≤0.10.Forged balls: C:0.53~0.74,Si:0 ...