Blasting is a widely used method for surface preparation and cleaning. The type of abrasive used directly affects the surface quality achieved and the efficiency of the process. White aluminium oxide (Al₂O₃) stands out in the blasting sector for its high purity, hardness and iron-free structure.
Technical specifications
- Chemical composition
- More than 99% Al₂O₃
- Hardness
- 9 on the Mohs scale
- Density
- 3.9 – 4.1 g/cm³
- Melting point
- Approx. 2050 °C
- Grain shape
- Angular and irregular
Grain size selection
| FEPA code | Average size (µm) | Application |
|---|---|---|
| F 24 | 600 – 850 | Heavy abrasion |
| F 60 | 212 – 300 | General surface cleaning |
| F 120 | 90 – 125 | Precision work |
Blasting applications
- Surface cleaning of stainless steel and non-ferrous metals
- Surface roughening before painting and coating
- Precision surface treatment of medical devices
- High-precision blasting in the aerospace and defence industries
- Processing of brittle materials such as glass, stone and ceramics
Advantages
- Can be used safely on stainless steels because it contains no iron
- Provides fast and effective cleaning thanks to its high abrasive power
- Being reusable offers a cost advantage
- Contains no respirable free silica; safe in terms of occupational health
- Environmentally friendly and protects the working environment with low dust generation
White aluminium oxide is an ideal abrasive in the blasting sector in terms of high performance, the environment and occupational safety. It has become indispensable especially for precision surface treatment and high-technology applications.
