Forged Grinding Ball, Forged Steel Balls, .
Features of forged grinding ball. 1) High hardness: surface hardness of forged grinding balls is to HRC 5865. The tolerance of the core hardness and surface hardness is not over 2HRC; 2) Good Impact Toughness: impact toughness of forged grinding balls is over 12J/cm²; 3) Low Broken Rate: the actual broken rate is not higher than 1%.