Original
By certification 
Brown aluminium oxide/brown fused alumina(A)
Al2O3 95%min.
Fe2O3 0.3%max.
SiO2 1.5%max.
TiO2 3.0.%max.
Magnetic material content 0.05%
color brown ……
hardness(mohs) 9
true density 3.9
Raw Marterial: Bauxite, coal
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.
Characteristics:
1 high hardness,good toughness and sharp shapening
2 good grinding, polishing, high temperature resistance
3 Corrosion- resistance, high strength, high hardness and wear- resistance
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