Low-chrome steel ball    

c: 2.2-3.6   si:1.2max  Mn 0.5-1.2   P: 0.1max S:0.06max  Cr:1.5-3.5   HRC:46min

Medium-chrome steel ball   

c: 2.0-3.0    si:1max   Mn: 0.5-2.5   P:0.1  max  S:0.06max  Cr:11min  HRC: 56-62

High-chrome steel ball   

c: 2.0-3.0   si:1max   Mn:  0.6-1.8   P:0.1max  S:0.06max  Cr:15min   HRC: 58-64

60Mn  forged grinding ball 

 C: 0.55-0.65  Si:  0.17-0.37  Mn:0.7-1.0   P:0.04max   S:0.04   Cr:0.25max    HRC  52-60

75MnCr  forged grinding ball

C: 0.72-0.92   Si: 0.17-0.37    Mn:0.7-1.0    P:0.04max  S:0.04max  Cr: 0.4-0.6  HRC: 58-64

The size of our grinding balls is from 2 0mm to 150mm .

Please don't hesitate to connect with me when you have any questions.