Brown Fused Alumina is fused and crystallized under high temperature from mixture of bauxite and other materials, characterized by its high hardness, good toughness and sharp shape in particles. Abrasive tools made of it are suitable for grinding metals of high-tensile strength such as carbon steel, general purpose alloy steel, malleable cast-iron and hard bronze etc. It also can be used as refractory materials. For refractory materials, RS Brown Fused Alumina can¡¯t burst¡¢pulverise and craze in the using course.


Specification Chemical composition(%)
Grit Size Al2O3 TiO2 SiO2 Fe2O3
F4-F80 95Min 3.0max 1.5max 0.3max
F90-F150 94Min 3.0max 1.5max 0.3max
F180-F240 93Min 3.0max 1.5max 0.3max
W1-W63 92.5Min 4.0max 1.8max 0.5max
P4-P80 95Min 3.0max 1.5max 0.3max
P90-P150 94Min 3.0max 1.5max 0.3max
P180-P240 93Min 3.0max 1.5max 0.3max
For abrasives

for refractories
Grit Size Al2O3 TiO2 SiO2 Fe2O3
0-1mm 94.5Min 3.0max 1.5max 0.3max
1-3mm 95Min 3.0max 1.5max 0.3max
3-5mm 95Min 3.0max 1.5max 0.3max
5-8mm 95Min 3.0max 1.5max 0.3max
8-12mm 95Min 3.0max 1.5max 0.3max
0-3m 94Min 3.0max 1.5max 0.3max
0-5mm 94Min 3.0max 1.5max 0.3max
0-10mm 94Min 3.0max 1.5max 0.3max
0-25mm 94Min 3.0max 1.5max 0.3max
180mesh-0 93.5Min 3.5max 1.8max 0.5max
220mesh-0 93.5Min 3.5max 1.8max 0.5max
320mesh-0 93.5Min 3.5max 1.8max 0.5max

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