Brown aluminium oxide is one of the most preferred abrasives in industrial blasting. Belonging to the fused alumina group, it is produced by melting bauxite and anthracite at high temperature. Its angular, hard structure gives surfaces an aggressive abrasive action. The fact that it contains no silica makes it a safer alternative in terms of health.
Technical specifications
- Chemical composition
- Al₂O₃ > 95%, Fe₂O₃ < 0.3%, SiO₂ < 1.2%
- Hardness
- Mohs 9
- Density
- ~3.9 g/cm³
- Colour
- Brown
- Shape
- Angular, sharp grains
Grain sizes and applications
| FEPA code | Size range (µm) | Application |
|---|---|---|
| F 08 | 2000 – 2800 | Heavy industrial cleaning |
| F 24 | 600 – 850 | General surface cleaning |
| F 60 | 212 – 300 | Medium-level roughening |
| F 120 | 90 – 125 | Precision surface treatment |
| F 220 | 45 – 75 | Fine detail blasting |
Blasting applications
- Rust and paint removal
- Matting of metal surfaces
- Decorative processing of glass and ceramics
- Surface preparation of automotive parts
- Production of sandpaper and abrasive stones
- Surface roughening before coating and welding
Advantages
- Fast and effective cleaning with high abrasive power
- Safe use on stainless steels because it contains no iron
- Compatible with wet and dry blasting systems
- Reusable, long-lasting and economical
- Provides occupational safety with low dust generation
- Environmentally friendly and recyclable
Brown aluminium oxide blasting media is an ideal choice in terms of high performance, low cost and environmental sustainability. Thanks to its wide choice of grain sizes and applications, it can be used with confidence in both heavy industry and precision surface treatment.
