Grinding Media Ball

Specifications:
1.Diameter: 20mm-150mm
2.Hardness:HRC55-67
3.Certificate: ISO9001:2008,ISO14001
4.Breakage rate:<1%
5.Impact tes:>12J/CM2
6.Endurance test times>12000

Chemical elements:
DT-1: 45# C:0.42-0.50 Mn:0.50-0.80 Si:0.17-0.37 Cr:0.2 max P: 0.035max Ni:0.25max Cu:0.25max
DT-2: 60Mn C:0.57-0.65 Mn:0.7-1.0 Si:0.17-0.37 Cr:0.25max S:0.035max P:0.035max Ni:0.3max Cu:0.25max
DT-3: 65Mn C:0.62-0.70 Mn:0.9-1.0 Si:0.17-0.37 Cr:0.25max S:0.035max P:0.035max Ni:0.3max Cu:0.25max
DT-4: B2 C:0.72-0.92     Mn:0.7-1.2 Si:0.17-0.37 Cr:0.4-0.6 S:0.04max P:0.04max
DT-5: 42Cr C:0.38-0.45 Mn:0.50-0.80 Si:0.17-0.37 S:0.035max P:.35max Cr:0.9-1.2 Ni:0.3max Cu:0.30max

Mechanical Properties:

Spec.		42Cr	50Mn	60Mn	65Mn
Impact Test AK.J/CM2		≥12	≥12	≥13	≥15
Endurance Test Times (5m)		≥10000	≥10000	≥12000	≥12000
Dia 25-60mm	Surface	≥55	≥56	≥58	≥62
	Core	≥48	≥50	≥52	≥54
Dia 70-100mm	Surface	≥52	≥55	≥58	≥58
	Core	≥45	≥50	≥50	≥52