Grinding Media Steel Balls for Copper Mining

• Material: Iron
• Content: 100%
• Usage: Mine, Cement Plant, Power Station
• Processing Type: Forging and Casting
• Size: 20-150mm
• Color: Metallochrome
• Model NO.: 45#, 60MN, B2, B3
• Customized: Customized
• Raw Material Heating: by Electric Furance
• Heat Treatment Method: Oil/Air Quenching
• Certification: ISO9001:2008
• Transport Package: Container Bag, Steel Drum
• Specification: 20-150mm
• Trademark: Jinan zhongwei
• Origin: Shandong Jinan
• HS Code: 73261100
• Production Capacity: 1000000

Product Description

FORGED STEEL BALL CHEMICAL ELEMENTS AND HARDNESS
 

Material	Chemical elements
	C	Si	Mn	P/S	Cr
B2	0.72-0.85	0.17-0.37	0.7-1.0	<0.04	0.4-0.6
60Mn	0.55-0.65	0.17-0.37	0.7-1.0	<0.04	<0.25
45#	0.42-0.50	0.17-0.37	0.5-0.8	<0.035	≤0.25
B3	0.58-0.66	1.6-1.9	0.65-0.8	<0.025	0.7-0.9

 
                                  Hardness
 

Material	25mm-50mm HRC		60mm-90mm HRC		100mm-125mm HRC
	Surface	Core	Surface	Core	Surface	Core
B2	60-65	58-62	58-63	50-55	56-60	40-45
60Mn	58-63	55-60	58-63	40-45	56-60	30-35
45#	55-58	45-55	55-58	30-35	50-55	25-30
B3					58-62	56-60

 

 
Weight and Microstructure of Forged Balls

(mm) Nominal diameter	(mm) Diametrical Tolerance	(kg) Approx weight     per ball	Average number per MT	Microstructure
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	+3.0,-2.0	0.89	1124
70	+3.0,-2.0	1.4	714
80	+3.0,-2.0	2.1	476
90	+3.0,-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

 
Long-term cooperation is our goal with every customer.

Because we know that good service and products cost effective is the most important magic weapon of maintaince of the old customer.

Because we know that to look for a new customer is far difficult than maintaince old customer.