High-Purity Aluminium Oxide for Precision Blasting
White fused alumina is aluminium oxide blast grit engineered for sharp cutting action, purity, and consistency. Its highly angular grain structure delivers aggressive material removal while maintaining strict contamination control.
Suitable for ferrous and non-ferrous materials in wet or dry blasting systems.
White fused alumina is selected where purity and cutting sharpness are more important than abrasive life. For tougher, more economical blasting with extended reuse, brown fused alumina is recommended.
Key Features
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Ultra-high purity aluminium oxide (>99% Al₂O₃)
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Extremely sharp, angular grain structure
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Iron-free – safe for contamination-sensitive applications
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Consistent cutting performance
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Suitable for ferrous and non-ferrous substrates
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Compatible with wet and dry blasting systems
Typical Applications
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Aerospace component surface preparation
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Medical and surgical tooling
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Precision steel and carbide tools
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Hard alloys requiring aggressive cutting
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Applications where iron contamination must be avoided
Its sharp grain structure allows precise surface preparation with minimal risk of cross-contamination.
Why Choose White vs Brown or Pink Alumina
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Maximum cutting sharpness
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Zero ferrous contamination risk
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Ideal for sensitive alloys and high-specification work
White fused alumina prioritises purity and cutting efficiency over abrasive toughness.
It is the preferred choice where surface cleanliness and material integrity matter more than abrasive reuse life (brown alumina) or balanced performance (pink alumina).
Technical Information – White Fused Alumina
Technical Properties
| Property | Typical Value |
|---|---|
| Chemical composition | >99% Aluminium Oxide (Al₂O₃) |
| Hardness | Approx. 9.0 Mohs |
| Specific gravity | ~3.9 – 4.1 g/cm³ |
| Bulk density | ~1.5 – 1.9 g/cm³ |
| Melting point | ~2050°C |
| Grain shape | Angular |
| Relative toughness | Moderate |
| Contamination risk | None (iron-free) |
| Suitable systems | Wet & dry blast cabinets |
Compatible with pressure, suction, and cabinet blasting systems.
Chemical Analysis
| Component | Typical % |
|---|---|
| Al₂O₃ | 99.73% |
| Na₂O | 0.14% |
| Fe₂O₃ | 0.03% |
| SiO₂ | 0.01% |
| CaO | 0.02% |
| TiO₂ | 0.02% |
| MgO | 0.01% |
Approvals & Standards
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Supplied for use in aerospace, medical, and precision engineering environments (where applicable)
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FEPA F & FEPA P grit standards
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Suitable for applications requiring iron-free abrasives
Certificates of conformity available on request.
Grades & Supply
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FEPA macro and micro grades
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Supplied in 25 kg bags
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UK stock, 3–5 working day delivery
FEPA grit sizes define the particle size distribution of fused alumina abrasives. Lower FEPA numbers correspond to coarser grains and more aggressive cutting, while higher FEPA numbers produce finer surface finishes and reduced material removal.
FEPA Grit Sizes & Approximate Particle Diameter
| FEPA Grade | Approx. Particle Size (µm) |
|---|---|
| F 008 | 2000 – 2800 |
| F 010 | 1700 – 2360 |
| F 012 | 1400 – 2000 |
| F 014 | 1180 – 1700 |
| F 016 | 1000 – 1400 |
| F 020 | 850 – 1180 |
| F 022 | 710 – 1000 |
| F 024 | 600 – 850 |
| F 030 | 500 – 710 |
| F 036 | 425 – 600 |
| F 040 | 355 – 500 |
| F 046 | 300 – 425 |
| F 054 | 250 – 355 |
| F 060 | 212 – 300 |
| F 070 | 180 – 250 |
| F 080 | 150 – 212 |
| F 090 | 125 – 180 |
| F 100 | 106 – 150 |
| F 120 | 90 – 125 |
| F 150 | 63 – 106 |
| F 180 | 53 – 90 |
| F 220 | 45 – 75 |
Please enquire for micro grade options.
Coarser FEPA grades are typically used for heavy rust removal and profiling, while finer grades are selected where controlled surface finish or reduced material removal is required.
Unsure which grit size is right for your application? – Contact us
Our technical team can advise on media selection based on substrate, finish, and blasting system.
Safety & Handling
White fused alumina is non-toxic, non-hazardous, and free from silica.
No special disposal precautions are required for the material as supplied; users should consider contamination introduced during use.