White aluminum oxide is a high-purity abrasive material produced by fusing high-grade aluminum oxide in an electric arc furnace. With its exceptional hardness and sharp-edged particles, it is ideal for precision sandblasting applications that require aggressive material removal and fine surface finishing. Its chemical stability and resistance to high temperatures make it suitable for cleaning, deburring, and surface preparation on a variety of substrates, including steel, aluminum, ceramics, and glass.
Key benefits of white fused alumina include its ability to produce consistent results, low dust generation, and recyclability, ensuring efficiency and cost-effectiveness. It is widely used in industries such as aerospace, automotive, and electronics for applications like rust and coating removal, weld cleaning, and surface texturing. Available in a range of grit sizes, white fused alumina can cater to different blasting needs, from coarse cleaning to ultra-fine finishing, making it a versatile and reliable abrasive choice.
Chemical Specification
White Fused Alumina for Sandblasting Application
Chemical Composition
The chemical composition of white fused alumina (WFA) used for sandblasting applications was determined through X-ray fluorescence (XRF) analysis. The results are presented below and comply with international standards.
| Component |
Content (%) |
| Aluminum Oxide (Al₂O₃) |
99.6 |
| Sodium Oxide (Na₂O) |
0.22 |
| Silicon Dioxide (SiO₂) |
0.08 |
| Iron Oxide (Fe₂O₃) |
0.04 |
| Calcium Oxide (CaO) |
0.10 |
Certificate of Analysis
1. Introduction
This report provides a detailed analysis of the physical and chemical properties of white fused alumina (WFA) used in sandblasting applications. The analysis is conducted in compliance with relevant international standards to ensure accuracy and consistency.
2. Sample Details
The white fused alumina sample was obtained from certified manufacturing sources and subjected to comprehensive testing. The sample preparation and testing adhered to ISO 11126-7 for non-metallic abrasives.
3. Chemical Composition
The chemical composition of the sample was determined using X-ray fluorescence (XRF) analysis. Results are as follows:
| Component |
Content (%) |
| Aluminum Oxide (Al₂O₃) |
99.5 |
| Sodium Oxide (Na₂O) |
0.18 |
| Silicon Dioxide (SiO₂) |
0.10 |
| Iron Oxide (Fe₂O₃) |
0.05 |
4. Physical Properties
The physical properties of the white fused alumina sample were assessed based on ASTM and ISO standards. The results are presented below:
| Property |
Value |
| Bulk Density (g/cm³) |
3.50 |
| Hardness (Mohs) |
9.0 |
| Grain Shape |
Angular |
| Specific Gravity (g/cm³) |
3.96 |
5. Grain Size Distribution
Grain size distribution was measured according to ISO 6344-1. The results are as follows:
| Mesh Size |
Cumulative Passing (%) |
Retained (%) |
| 16 |
97 |
3 |
| 24 |
94 |
6 |
| 36 |
90 |
10 |
| 46 |
87 |
13 |
6. Conclusion
The white fused alumina sample exhibits superior purity and hardness, making it highly effective for sandblasting applications. Its low impurity content and angular grain shape ensure optimal performance in surface preparation and cleaning tasks. The results confirm its compliance with international quality standards for industrial abrasives.
