High Chrome Cast Grinding Steel Ball For Mining Buy Cast
High Chrome Cast Grinding Steel Ball For Mining . of Casting Grinding Ball. 1) High Hardness: surface hardness of casting balls is to 6068 HRC and volume hardness of foundry steel balls is to 6063 HRC; 2) High Impact Toughness: the impact toughness of high chrome grinding media is more than 12 J/cm2; 3) Low Broken Rate: the actual broken rate is not higher than 1%;