Brown aluminium oxide is fused and crystallized under high temperature from a mixture of bauxite and other and other raw materials. It is characterized by its high hardness,good toughness and shape in size. Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as: carbon steel,general-purpose alloy steel,annealed malleable iron and hard broze,etc.It also can be used as refractory materials.

Grit size :12#-220#;
Micropowder: 240#-1200#.

Character
1. AL2O3 95% SIO2 1.5% ;
2. Fe2O3 0.3% TIO2 3.0% ;
3. Hardness(mohs) 9 ;
4. Ture density 3.9 ;
5. Magnetic material content 0.050%.

Purpose	Specification		Chemical Composition(%)				Magnetic material content(%)max
Abrasives grade			Al2O3min	Fe2O3max	SiO2max	TiO2max
	grain	12-80	95	0.3	1.5	3.0	0.05
		90-150	94	0.3	1.5	3.0	0.03
		180-220	93	0.3	1.5	3.5	0.02
	micropowder	240-4000	92.5	0.5	1.8	4.0	—
Refractory grade	Group Size	0-1mm 1-3mm 3-5mm 5-8mm	94.5	0.3	1.5	3.0	—
	Fine Powder	-180mesh -200mesh -240mesh -320mesh	93.5	0.5	1.5	3.5	—
color			Dark brown
Hardness(mohs)			9.0
Melting point(°C)			2250
Maximum service temperature(°C)			1900
Ture density(g/cm3)			3.9
Crystal form			Trigonal crystal system

Product usage
1) Abrasive: Produce ceramic gring wheel, resinoid gringding wheel, Grinding stone, Gringing block, sand paper, sand cloth, sand belt, polish wax, abrasive paste, coating etc..
2) Refractory material: Mainly used for abrasion and high temperature resiatant, inoxidizable aggregate and filling of shaped and monolithic refractory in steel metallurgy, various industrial stoves, electric furnace etc..
3) Sandblasting abrasive: Mainly used for various material workpieces to decontaminate, derusting, prevent corrosion, remove oxide skin etc..
4) Abrasion resistance ground: Mainly used for non-slip of airport and road, chenmical factory
board paving.
5) Precision casting: Investment casting technics of stainless steel and aluminium casting in coating.

Application
1. it are suitable for grinding high-speed,high carbon steel
2.high-grade refractory materials
3.abrasives tool
4.grinding and polishing
5.ceramics
6.LED
7.sandblasting
8.aviation