... no wearing,adn high hardness etc High chrome or low chrome casting steel ball are extensive used in mines, cement build ... etc powder prepared.chemical elements.high chrome casting steel ball:c:2.0-2.8,si:<1.0,mn: ... ,ni:0-1.5,p:<0.10,s<0.06middle chrome casting steel ball:c:2.1-3.2,si: ... ,ni:0-1.5,p:<0.10,s<0.06low chrome casting steel ball:c:2.2-3.6,si:< ... 0-1.0,cu:0-0.8,p:<0.10,s<0.10 casting steel ball