Brown aluminum oxide is electricallyfused in an arc furnace from a mixture of bauxite at high temperature. It hasbrown colour, high hardness and great toughness. The abrasives tools made ofbrown aluminum oxide are suitable for steel, malleable cast iron and hardbronze. It used for refractory aluminum oxide lining mixture, pouring materialscastable, etc.

Usage	For Vitrified Wheels	For Organic	For Belts	For Sheets	For     abrasives blasting
Symbol	A	A-B	A-P1	A-P2	A-S

Typical value of physical chemical performanceindex
   

Type	Grit	Chemical composition(%)					CAL.TEM. ℃	Magnetic %contens≤	Range of buld  density(g/cm3)
		Al2O3	SiO2	TiO2	Fe2O3	CaO
A	F46	95.72	0.92	2.52	0.06	0.28	1050-1350	0.009	1.85
	F120	95.30	1.12	2.74	0.07	0.27	1050-1350	0.008	1.62
	F180	94.70	1.27	2.93	0.15	0.39	1050-1350	0.006	1.54
	F360	92.42	1.75	3.85	0.62	0.45	1050-1350	0.005	1.29
A-B	F46	95.56	1.12	2.39	0.06	0.30	-	0.009	1.85
	F120	95.12	1.22	2.62	0.08	0.32	-	0.007	1.61
	F180	94.32	1.30	2.91	0.16	0.33	-	0.006	1.54
	F360	91.47	1.78	4.36	0.65	0.50	-	0.005	1.22
A-P1	P40	95.57	1.08	2.45	0.06	0.28	-	0.007	1.72
	P120	94.85	1.17	2.76	0.05	0.29	-	0.006	1.58
	P180	93.89	1.37	3.40	0.15	0.32	-	0.006	1.52
	P600	91.82	1.69	4.67	0.52	0.49		0.005	1.25
A-P2	P40	93.27	1.32	3.20	0.19	0.30	-	0.007	1.71
	P120	92.85	1.27	3.21	0.21	0.37	-	0.008	1.56
	P180	91.65	1.42	3.72	0.27	0.42	-	0.007	1.50
	P600	90.80	1.77	4.62	0.72	0.56	-	0.006	1.21