hardness 60-65 grinding steel ball for grinding iron ore mill grinding ball

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hardness 60-65 grinding steel ball for grinding iron ore mill grinding ball

Austenite-bainite grinding ball is a kind of grinding ball, superior to the present widely used low-chromium ball, high-chromium ball, and variuos forged ball. The balls can be used in fields such as metallurgy mine, ore dressing, coal-grinding and cement production , and are manufactured by Chengde Rongmao Cast Iron Company Ltd. Its product size is 60mm, 80mm, 100mm, 120mm, 130mm, and especially the biggest size of 150mm. Our annual output is about 50,000 tons for the balls.

Chemical Composition (%)

C	Si	Mn	Cr	Ni	Cu	Mo	S	P
3.3-3.9	2.2-3.0	2.3-2.9	1.0	0.2-0.5	0.4-1.0	0.3-0.8	0.03-0.05	0.03-0.05

AB Grinding Ball	Density	Surface Hardness (HRC)	Impact Toughness	Metallographic Structure	Falling Ball Impact Fatigue Life
	7.3 T/m3	64	7-10 J/cm2	B+A+Carbide	≤Φ100	≥18000
					>Φ100	≥15000
Characteristics:	High hardness, good wear-resistance, light in weight, energy saving, neat appearance, external hard inside tough, not broken.