Specifications
1) Diameters Dia. 20 - 150mm
2) Hardness HRC 55-65
3)Impact value >12 J/cm2
4)Breakage rate <0.5%
5）Chemical elements: C:0.60-0.68 Si:0.20-0.40 Mn:0.9-1.3 S,P<0.030 Cr:1.0-1.3
Chemical elements: C:0.57-0.65 Si:0.17-0.37 Mn:0.7-1.0 S,P<0.035 Cr 0.25Max
6)delivery time: normally in 10-30 days

Raw material 45# steel,60Mn,50Mn,RCAB-1,RCAB-2,RCAB-6

STANDARD SIZE OF GRINDING MEDIA:Balls diameter (mm) 150mm,140mm,130mm,125mm,100mm,90mm,80mm,75mm,70mm,65mm,60mm,50mm,40mm,30mm,25mm, 20mm


TOLERANCE ON SIZE: Variation on size shall not exceed the following limits
SHAPE AND SIZE TOLERANCE (mm)
Balls for sizes 90mm & above +3.0/-1.5
Balls for sizes 60 mm to 90mm + 2.50/-1.0
Balls for sizes 30 to 50 mm & below + 2.00/-1.0
Balls for sizes 15 to 25 mm & below +1.0/-0.5