1.Feature:
1) High Hardness: surface hardness of forged and rolling ball is to 58-68 HRC and volume hardness is to 57-63 HRC
2) High Impact Toughness: impact toughness is more than 12 J/cm2
3) Low Broken Rate: the actual broken rate is not higher than 1%
4) Wear-resistant: loss of grinding media is less than 80g/ton