corundum-欧洲杯投注官网

product description：on the base of white corundum increased by 22% chromium and smelted in electric arc, it appears amaranth. the hardness is little bit higher than adamantine spar, similar with corundum, the micro-hardness can reach 2200-2300kg/mm2. the toughness is higher than corundum and little bit lower than adamantine spar.

physical and chemical indicators: implementation of standards（gb/t7986-2001）

item	unit	value
al2o3	%	98.5 min
cr2o3	%	0.2-0.45
particle size	gb/t2481.1-1998	12#-220#
particle density	g/cm3	3.90 min
magnetic content	%	0.004 max