White Aluminum Oxide(WFA), also known as white Fused Alumina, is a chemical compound of aluminum and oxygen. The most common form of crystalline aluminum oxide is known as corundum. It is electrically fused in an arc furnace at 2050℃ with high purity Alumina. The final product is used in applications where higher purity levels and lower iron content is desired.
White Fused Alumina extreme hardness makes it suitable for use as an abrasive and as a component in cutting tools. The major usage of specialty aluminum oxide products is in ceramics, refractories, polishing, and abrasive applications.
White Fused Alumina is a pure, clear Fused Alumina, which makes the whitest vitrified wheels possible with low soda and silica content. This is the most friable aluminum oxide.
It has extremely high purity and large crystal size, so the crystals fracture comparatively swiftly and constantly cutting crystals to small pieces.
White Fused Alumina for Abrasives is used in the grinding of heat sensitive alloys.
Taking advantage of its friability and cool cutting ability, it is widely used in precision grinding of high speed steels, segments and internal grinding wheels.
Surface grinding
External and internal cylindrical grinding
Creep-feed grinding of low or unalloyed steel
Pressure blasting
Micro-dermabrasion
Lapping
Anti-skid
Precision lapping
Micro-blasting
Fine grit bonded and coated applications
Thermal coating
Polishing compounds
| Main Chemical Composition | ||||
| White fused aluminum grit sand | white fused alumina micro powder | White fused aluminum section sand | White fused aluminum fine powder | |
| AL2O3 | 99.53% | 99.27% | 99.59% | 99.28% |
| SiO2 | 0.13% | 0.14% | 0.01% | 0.14% |
| NA2O | 0.23% | 0.28% | 0.24% | 0.27% |
| Fe2O3 | 0.07% | 0.06% | 0.02% | 0.05% |
| CaO | 0.03% | 0.05% | 0.02% | 0.04% |
| Colour | White |
| Mohs hardness | 9 |
| Nup hardness | 2000-2200Kg/mm2 |
| Operating temperature | 1900℃ |
| Melting point | 2250℃ |
| Proportion | 3.95g/cm3 |
| Bulk density | 3.6g/cm3 |
| Packing density | 1.55-1.95g/cm3 |
| Specific heat | 0.26cal/g.℃ (20-90℃) |
| Thermal conductivity coefficient | 6.16W/（m·K）（1000℃） |
| Linear expansion coefficient | 8.0×10-6/℃（200-1000℃） |
| Refractive index | e=1.760w=1.768 |
| Crystal form | Tripartite crystal system |
White corundum abrasive is suitable for surface beautification of various high-end products, crafts or hardware products. After sandblasting, the surface will be white without any impurities, eliminating the trouble of cleaning.
Standard Packaging:
- Big bags (1000kgs, 1250kgs, 1350kgs.) with or without pallets;
- 20 or 25kg plastic, or paper bags, with or without pallets.
*Custom Packaging is available upon request.
F8-F220,F240-F1200 or any other sizes by customer's requirement.
