Brown Fused Alumina

Brown Fused Alumina HS Code 28181010, CAS No. 1344-28-1, it is a product manufactured by gradual melting reduction of calcined bauxite in an electric arc furnace at high temperature (approximately 2000 degrees Celsius). Its chemical composition consists mainly of Al2O3 (94,5-97%) and vestigial amounts of TiO2, SiO2, Fe2O3, CaO and MgO.

Brown Fused Alumina is characterized by good toughness, high mechanical resistance and hardness (9 in Mohs scale). The micro hardness of the material reaches about 1900kG/mm2. Specific gravity (density) equals 3,90+/-0,05 g/cm3. Bulk density depending on size equals 1,68-1,95 g/cm3. It has relatively high thermal conductivity and low thermal expansion. As regards electricity it is an insulator.

1.Basic Indicators

Molecular Formulaα-Al2O3 Trigonal
AppearanceBrown powder
CAS No.1344-28-1
HS Code28181010

2. Physical properties

Crystal shapeα-Al2O3 Trigonal
Micro HardnessHV1800-2200
Melting Point (℃)2050
True Density (g/cm3)≥3. 90
Bulk Density(g/cm3)1.68-1.95
Linear Expansion Coefficient(0—1600℃) 7.6
brown fused alumina
brown fused alumina

3. Chemical analysis

Grade AGrade A’Grade BGrade B’Grade C





Note: Using time: Grade A 5-7tims. Grade B 3-5times. Grade C 1-2times

4. Applications

Flooring industry:
– Additive for wear-resistant floorings

– Cleaning metallic surfaces with removal of material (abrasive effect)
– Removing rust and scale from metallic surfaces
– Removing tempering colour
– Removing paint

– Surface pre-treatment before applying protective coatings or metal spraying
– Roughening metallic surfaces before applying coatings (sweeping)
– Processing very hard components
– Deburring
– Creating a matt finish on glass
– Blasting stone (for stone masonry)
– refractory material, ceramics, coatings ,bonded & coated abrasives

5.Product Specification / Models

For Refractory
0-0.1mm 0-0.2mm 0-0.5mm 0-1mm 0.5-1mm 1-3mm 3-5mm 5-8mm 100mesh 200mesh 325mesh
Other specs are available upon request.

For Bonded & Coated Abrasives
Bonded abrasives: F24 F30 F36 F40 F46 F54 F60 F80 F100 F120 F150 F180 F220 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200
Coated abrasives: P24 P30 P36 P40 P50 P60 P80 P100 P120 P150 P180 P220 P240 P280 P320 P360 P400 P500 P600 P800 P1000 P1200 P1500 P2000 P2500 P3000
Other specs are available upon request.

For Sandblasting & Grinding
F24 F30 F36 F40 F46 F54 F60 F80 F100 F120 F150 F180 F220 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200
Other specs are available upon request.

For further technical data sheet, please do not hesitate to contact us

6. Packing and storage                                                                                       

Packing: Double coated plastic woven / paper bag, net weight 25kg.
Big bag packing, net weight 1000kg / 1250kg per clients’ request.
Storage: Dry, ventilated, moisture proof.

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