High-quality Grinding Steel Balls

　　Specification:

　　Diameter: 20 to 150mm

　　Near surface hardness: more than 62 HRC

　　Core hardness: more than 55 HRC

　　Chemical elements:

　　C: 0.37-0.55

　　Si: 0.17-0.47

　　Mn: 0.7-1.0

　　Cr: 0.8-1.25

　　P: less than 0.025

　　S: less than 0.025

　　Characteristics:

　　High hardness, the volume hardness is 50 to 63 HRC, and hardness gradient uniform distribution

　　Good wear resistance

　　Impact toughness more than 12J/cm2

　　Breakage rate less than 0.5%

　　Application:

　　Mine

　　Cement plant

　　Power station

　　Chemical industry

　　Outer packing:

　　Container bags or steel drum