high chrome alloy steel ball with good price

High chrome steel casting grinding media ball for mining, alloy grinding steel ball


- Characteristics: high hardness, good wear resistant, low breakage, no deformation.
- Hardness: 45-65HRC; Breakage rate ≤1%; Drop times≥10,000.00

Name	Chemical Elements (%)
	C	Si	Mn	Cr	Mo	Cu	P	S
Special High Cr	2.0-3.3	≤1.2	0.3-1.5	15-23	0-3	≤1.2	≤0.06	≤0.06
Normal High Cr	2.0-3.3	≤1.2	0.3-1.5	10-13	0-3	≤1.2	≤0.06	≤0.06
Medium Cr Balls	2.0-3.3	≤1.2	0.3-1.5	4-6	0-1.0	0-1.2	≤0.06	≤0.06
Low Cr Balls	2.1-3.6	≤1.5	0.3-1.5	1-3	0-1.0	0-0.8	≤0.06	≤0.1

Name	HRC	Ak(J/cm2)	Microstructure	Times of Falling Balls
Normal High Cr	≥60	≥4	M+C+A	≤Φ80	≥15000
				≥Φ80	≥10000
Medium Cr Balls	≥48	≥3.0	P+C	≤Φ80	≥15000
				≥Φ80	≥10000
Low Cr Balls	≥45	≥2.5	P+C	≥10000
M-Martensite  C-Carbide   A-Austenite   P-Pearlite