Brown Fused Alumina (BFA)
Premium aluminum oxide abrasive & refractory raw material — exceptional toughness, high purity, and thermal stability
What is Brown Fused Alumina?
Brown Fused Alumina (BFA) is a high-purity aluminum oxide (Al₂O₃) produced by smelting calcined bauxite in an electric arc furnace at temperatures exceeding 2000°C. The resulting material is crushed and classified into precise grain sizes for various industrial applications.
Known for its exceptional hardness (Mohs 9.0), toughness, and chemical stability, BFA is the preferred choice for abrasive products, refractory castables, and surface preparation media.
Technical Specifications
Premium grade BFA with consistent quality and precise particle distribution
| Property | Typical Value |
|---|---|
| Al₂O₃ Content | 95.0% - 97.5% |
| TiO₂ Content | 1.5% - 3.0% |
| Fe₂O₃ Content | ≤ 0.5% |
| SiO₂ Content | ≤ 1.2% |
| Bulk Density | 3.85 - 3.95 g/cm³ |
| Hardness (Mohs) | 9.0 |
| Melting Point | ~2050°C |
| Grain Size Availability | Applications |
|---|---|
| 12 mesh - 60 mesh | Blasting media, heavy abrasives |
| 80 mesh - 240 mesh | Grinding wheels, coated abrasives |
| 240 mesh - 400 mesh | Polishing, lapping compounds |
| Micro Grits (F230-F2000) | Precision finishing, fine grinding |
Exceptional Hardness
Mohs 9.0 hardness ensures superior wear resistance and cutting performance
High Temperature Stability
Maintains integrity up to 2050°C — ideal for refractory applications
Chemical Inertness
Resistant to acids, alkalis, and corrosive environments
Key Applications
Abrasives
Grinding wheels, sandpaper, abrasive blasting
Refractory Castables
High-temperature linings, monolithic refractories
Steel Industry
Ladle linings, slide gate plates, nozzle fillers
Surface Preparation
Shot blasting, rust removal, surface cleaning
Ceramics
Kiln furniture, ceramic linings
Precision Finishing
Lapping, polishing, micro-finishing
Request Brown Fused Alumina Samples
Available in all standard grain sizes — FEPA, ANSI, and JIS standards. Custom grading available.