Grinding Media Ball: 1. High hardness; 2. Abrasion resistant; 3. Long service life. Grinding Media BallGrinding Balls:20~135mm Chemical composition (%): C: 2.3 - 2.4, Si: 1.5max,Mn: 0.5-1.5, Cr: 1.0-3.0,P: 0.1 max,S: 0.1 max Grinding Balls:Applied areas: cement building materials, metal mining, coal paste thermal power plants, chemical engineering, ceramic coating, light industry, magnetic ...