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Hardness : 45-65HRC Impact Value : 1-7j/Cm^2 Breakage Rate : 0.5%-1% Diameter : 17mm-130mm(1-6inch) Balls Number : 8000-12000times Wear : 0.02-0.80kg Microstructure : M+C ISO9001: 2008 MOQ: : 5 ...