... 65Low Cr : Surface HRC 45-50Forged ball: HRC 50~60C). Characteristics: 1) High hardness 2) Good wear-Resistance 3) No ... stations4) Chemical industryE).Chemical Composition.High Cr balls: C:2.0~3.2,Si≤1.0, Mn≤1.5, Cr: 10 ... .Low Cr balls: C:2.0~3.0,Si≤1.2,Mn≤1.5, Cr: 1.0~2.2, Mo ≤1.0, ... ,Si:0.15~0.37, Mn:0.45~1.2,S:0.04max. P:0.04Max.Cr :0.60max ... Per Bag)Iron drum (850~920Kg Per Drum) grinding steel ball