... CylpebsHigh& low chrome alloyed micro-ballsForged Grinding ballsA) Diameter: 10~130mmB). HardnessHigh Cr : Surface HRC 58-65Low Cr : ... Power stations4) Chemical industryE).Chemical Composition.High Cr : C:2.0~3.2,Si≤1.0, Mn≤1.5 ... , Cr: 10~28, Mo ≤1.0, P≤0.10, S≤0.08.Low Cr: C:2.0~3.0, ... Si≤1.2,Mn≤1.5, Cr: 1.0~2.2, Mo ≤1.0, P≤0.10 ... , S≤0.10.Forged balls: C:0.53~0.74,Si:0.15~0 ...