Forged Steel Ball: 1)Diameter:25-130 mm 2)Grinding endurable 3)Hardness: 52-65HRC 4)Material:50Mn,60Mn

Forged Steel Ball:

1.Material 50Mn,60Mn

2.Diameter 25mm-130mm

3.Characteristic High hardness, Grinding endurable ,None           

out-of-round, Low percentage of damage, High total mill efficiency.

4.Apply Realm: Cement plan, mine , Mill tailings ,Thermal power generation, Chemical industry.

5.Packing Jumbo bag or Iron drum

Classification Chemical Composition

Name	Material	C	Mn	Si	Cr	S	P
zw-1	50Mn	0.48-0.56	0.70-1.0	0.17-0.37	≤0.25	≤0.035	≤0.035
zw-2	60Mn	0.57-0.65	0.7-1.0	0.17-0.37	≤0.25	≤0.035	≤0.035

 Mechanical Property

Name	Material	Impact Test Times (AK.J/cm2)	Endurance Test Times(5m/time)	Surface Hardness  (HRC)	Core Hardness (HRC)	Breakage
zw-1	50Mn	≥12	≥10000	≥56	≥35	<1%
zw-2	60Mn	≥13	≥10000	≥58	≥38	<1%

Substance And Metallurgical Structure

Nominal Diameters (mm)	Diameter Tolerance (mm)	Approx Weight Per Ball (kg)	Average Number Per MT	Metallurgical Structure
25	+1.5, -0.5	0.064	15625	M +B+C    (M:Martensite;B:Bainitic;C:Carbide)
30	+1.5, -0.5	0.11	9090
40	+2.0, -1.0	0.26	3846
50	+2.0, -1.0	0.51	1961
60	+3.2, -2.0	0.89	1124
70	+3.0, -2.0	1.4	714
80	+3.2, -2.0	2.1	476
90	+3.2, -2.0	3	333
100	+4.0,-3.0	4.1	244
110	+4.0,-3.0	5.47	283
120	+4.0,-3.0	7.1	141
130	+4.0,-3.0	9.02	111

Forged Steel Ball