What is White Fused Alumina?
White Fused Alumina is a high-purity, mineral abrasive that is used in many industrial applications due to its extreme hardness and purity. It consists mainly of aluminum oxide (Al₂O₃) and is produced in specialized high-temperature processes. With its sharp edges and high density, it is ideal for processing surfaces that need to be particularly precise and clean.
Our customers in the medical technology, in aerospace technology and in the optical and Industry attach importance to an iron-free material with highest purity, high degree of whiteness, extreme hardness and a wide range of precise grit sizes up to the micro range of 3 μm. We will be happy to help you.
Product features
| Typical physical properties | |
|---|---|
| Hardness | 9 mohs |
| Grain shape | angular |
| Melting point | ca. 2050 °C |
| Specific gravity | ca. 3,9 – 4,1 g/cm3 |
| Bulk density* | ca. 0,8 – 2,1 g/cm3 |
*depending on grain size
| Typical chemical analysis | ||
|---|---|---|
| White Fused Alumina Macro | White Fused Alumina Micro | |
| Al2O3 | 99,73 % | 99,69 % |
| Na2O | 0,14 % | 0,20 % |
| Fe2O3 | 0,03 % | 0,02 % |
| SiO2 | 0,01 % | 0,03 % |
| CaO | 0,02 % | 0,05 % |
| TiO2 | 0,02 % | 0,01 % |
| MgO | 0,01 % | 0,01 % |
Available sizes
White Fused Alumina Macro
| FEPA
Average grain 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 |
| Metric
Average grain size (mm) |
|
|---|---|
| 0,25 – 0,50 | |
| 0,50 – 1,00 |
Other grain sizes can be produced if required.
White Fused Alumina Micro
| FEPA
Average grain size (µm) |
|||
|---|---|---|---|
| ds3-value max. | ds50-value | ds94-value min. | |
| F 230 | 82 | 53,0 +/-3,0 | 34,0 |
| F 240 | 70 | 44,5 +/-2,0 | 28,0 |
| F 280 | 59 | 36,5 +/-1,5 | 22,0 |
| F 320 | 49 | 29,2 +/-1,5 | 16,5 |
| F 360 | 40 | 22,8 +/-1,5 | 12,0 |
| F 400 | 32 | 17,3 +/-1,0 | 8,0 |
| F 500 | 25 | 12,8 +/-1,0 | 5,0 |
| F 600 | 19 | 9,3 +/-1,0 | 3,0 |
| F 800 | 14 | 6,5 +/-1,0 | 2,0 |
| F 1000 | 10 | 4,5 +/-0,8 | 1,0 |
| F 1200 | 7 | 3,0 +/-0,5 | 1,0* |
* at 80%
Blasting systems
Pressure blast machines
Vacuum blast machines
approval
PMC 3052 (Pratt & Withney)
CSS12 (Rolls-Royce)
ABR 9-0160 (Airbus)
Packaging
25 kg bags on 1t pallets
20 kg bags on 1t pallets
1 ton loose in a big bag
Specification
FEPA F Norm
FEPA P Norm
EN ISO 11126-7
EN 4637
DIN ISO 8486-1
DIN 8201-6
MIL A-A-59316
ANSI B74-12
JIS R6001
DMR71-100
NF L 06-828
D50TF5 Class A (GE)
Key Properties of White Fused Alumina
High Purity
With an aluminum oxide content of over 99%, White Fused Alumina offers exceptional purity.
Hard Structure
With a Mohs hardness of 9, White Fused Alumina is excellent for processing hard materials.
Reusable
Due to its high durability, it can be used multiple times, making it a cost-effective solution.
Benefits of White Fused Alumina Compared to Other Abrasives
Mixed Corundum offers several advantages over other abrasives, making it a preferred choice in many industrial applications:
Residue-Free Surfaces
Unlike other abrasives, White Fused Alumina leaves no residue, making it ideal for applications that require a completely clean end product.
Efficient and Fast Processing
The hardness and sharp edges allow quick processing, reducing processing times and enhancing productivity.
Environmentally Friendly
Reusable, reducing material consumption and waste, making White Fused Alumina a sustainable choice for industry.
Technical data of white fused alumina
Material composition
White aluminium oxide consists of over 99% aluminium oxide (Al₂O₃) and is free from iron impurities.
Hardness and density
It has a Mohs hardness of 9 and a high density, which results in effective and even processing.
Grain sizes
White aluminium oxide is available in various grain sizes, which can be selected depending on the application.
Applications for white fused alumina
Thanks to its special material properties, white aluminium oxide is versatile and suitable for demanding industrial applications, especially for surfaces that need to be particularly smooth and free of residues.
Precise surface finishing
White aluminium oxide is the first choice for preparing workpieces that will subsequently be painted or coated. Its sharp edges and high density enable a uniform and fine surface structure.
Processing sensitive materials
As white aluminium oxide does not leave behind any impurities, it is used for cleaning and finishing glass, stainless steel and other sensitive materials.
Medical technology and implants
Due to its high purity, white aluminium oxide is also used in medical technology, for example for blasting implants. Absolute purity and freedom from residues are crucial here.
