... chrome casting steel ball, diameter:17-170mm,no breakage, even wearing, no wearing,adn high hardness etc High chrome or low chrome casting steel ball are ... magnetic material etc powder prepared.chemical elements.high chrome casting steel ball:c:2.0-2.8,si:<1.0,mn ... -1.5,p:<0.10,s<0.06middle chrome casting steel ball:c:2.1-3.2,si:0.5-2 ... 1.5,p:<0.10,s<0.06low chrome casting steel ball:c:2.2-3.6,si:<1.2,mn ...