... ) Chemical industryE).Chemical Composition.High Cr balls: C:2.0~3.2,Si≤1.0, Mn≤1.5, Cr: ... P≤0.10, S≤0.08.Low Cr balls: 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:0.15~0.37, Mn:0.45~1.2 ... ,S:0.04max. P: ...