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1.Forged steel balls
Size: 20mm-150mm
Hardness:HRC55-65
Chemical elements:
C: 0.62-0.70; Si: 0.17-0.37; Mn: 0.9-1.2;; S & P: 0.04Max; Cr: 0.25Max.
2.High chrome cast balls
Size: 20mm-120mm
Hardness:HRC58-65;
Chrome content:11-14%
3. Low chrome cast balls
Size: 20mm-120mm
Hardness: HRC45-55;
Chrome content:1-3.5%
wear-resisting low chrome casting steel ball steel clypebs