Brown Aluminum Oxide(BFA) is fused in an electric arc furnace at high temperature and produces a high strength, tough, and extremely durable grain. Brown aluminum oxide is a medium to high density product which is available in standard grades or can be custom graded for your application.
Get A QuoteBrown Fused Alumina is made from high quality bauxite by fusing in an electric arc furnace at high temperature. It has good toughness and high hardness. It is suitable for manufacturing of Vitrified and Resin Bonded Abrasives, Coated Abrasives, for lapping, Polishing and Sandblasting.
The abrasive tools made of brown aluminum oxide are suitable for grinding carbon steel, normal alloy steel, malleable cast iron and hard bronze etc.
Brown Fused Alumina for Abrasives can be divided into two kinds:
(1) For bonded Abrasives:BFA-01 (with Medium Density)and BFA-02 (with High Density);
(2) For Coated Abrasives:
We can also produce medium (1050C) and high (1350C) tempreture calcined Brown Fused Alumina and Coated BFA.
F8-F220,F240-F1200 or any other sizes by customer's requirement.
| Usage | Size | Main Chemistry % | M.I. % | ||||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | ||||
| Abrasives | F | 4#—80# | ≥95 | ≤0.3 | ≤1.5 | ≤3.0 | ≤0.05 |
| 90#—150# | ≥94 | ≤0.03 | |||||
| 180#—240# | ≥93 | ≤0.3 | ≤1.5 | ≤3.5 | ≤0.02 | ||
| P | 8#—80# | ≥95.0 | ≤0.2 | ≤1.2 | ≤3.0 | ≤0.05 | |
| 100#—150# | ≥94.0 | ≤0.03 | |||||
| 180#—220# | ≥93.0 | ≤0.3 | ≤1.5 | ≤3.5 | ≤0.02 | ||
| W | 1#-63# | ≥92.5 | ≤0.5 | ≤1.8 | ≤4.0 | — | |
| Color | Dark brown |
| Crystal form | tripartite crystal system |
| Mohs Hardness | ≥9.0 |
| Melting point（℃） | 2250 |
| Maximum operating temperature（℃） | 1900 |
| True density（g/cm3） | ≥3. 90 |
| Linear expansion coefficient（0—1600℃） | 7—9 |
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