Product Description
White Fused Alumina (white corundum)
WFA Abrasive blasting media is made of 99% aluminum oxide powder as raw material, which is refined and crystallized by electric melting (thus white corundum is also called fused alumina and white fused alumina). The white corundum sand produced by our factory has high purity, low impurities, low sodium content, uniform particles and high whiteness.
Product Feature
1. The Al2O3 purity is high(99%min). So the hardness & grinding ability is high with good grinding efficiency.
2. High wear-resistance. Even in high-temperature circumstances, the strength is still excellent.
3. The white fused aluminum oxide powder is suspension treated by water. So it is of flowability and easy to scatter.
4. Low oil absorption especially for water-based paint.
5. Neutral property with PH value around 7-8.
6. High whiteness. It doesn’t affect the color of paints or coatings adding Al2O3 powder.
7. Resistant to most corrosive alkali and acid. It doesn’t dissolve in water.
8. Resistant to high temperature up to 1900 °C. 9. Good particle size consistency without big size grains. So it prevents scratch on the grinding substrate.
Chemical Composition | |
AL2O3 | 99.62% |
Fe2O3 | 0.02% |
Na2O | 0.18% |
K2O | 0.01% |
SiO2 | 0.07% |
CaO | 0.02% |
MgO | 0.01% |
L.I.O. | 0.05% |
Physics Properties: white corundum, white fused alumina | |
Color | White |
Crystal form | Triangal crystal system |
Mohs hardness | 9.0-9.5 |
Micro hardness | 2000-2200 kg/mm² |
Melting point | 2250℃ |
Maximum operating temperature | 1900℃ |
Specific Gravity | 3.95g/cm3 |
Volume density | 3.6g/cm3 |
Particle shape | Angular |
Product model
F Grit Size | Mean diameter in um | Bulk Density(LPD) in g/cm3 |
F8 | 2460 | 1.79-1.88 |
F12 | 2085 | 1.78-1.88 |
F14 | 1765 | 1.77-1.86 |
F16 | 1470 | 1.75-1.85 |
F20 | 1230 | 1.74-1.85 |
F22 | 1040 | 1.73-1.84 |
F24 | 885 | 1.73-1.83 |
F30 | 745 | 1.73-1.82 |
F36 | 625 | 1.72-1.82 |
F40 | 525 | 1.71-1.81 |
F46 | 438 | 1.70-1.80 |
F54 | 370 | 1.68-1.79 |
F60 | 310 | 1.68-1.78 |
F70 | 260 | 1.63-1.73 |
F80 | 218 | 1.61-1.71 |
F90 | 185 | 1.59-1.69 |
F100 | 154 | 1.58-1.68 |
F120 | 129 | 1.55-1.62 |
F150 | 109 | 15.2-1.61 |
F180 | 82 | 1.50-1.60 |
F220 | 69 | 1.48-1.58 |
Applications
1.Metal sandblasting surface treatment: Removing the oxide layer of metal, stainless steel, aluminum alloy, tungsten molybdenum, copper products and other materials. Abrasive sandblasting to remove rust. White aluminum oxide grain has strong grinding ability and high efficiency. It can be recycled and will not leave residues on the surface of the workpiece. White aluminum oxide grain does not contain iron, sulfur, chlorine and other elements. It can be used in dentistry, food, medical equipment, aerospace and other fields : Surface treatment before spraying for spraying, painting, supersonic thermal spraying, etc., to increase the unevenness of the surface of the material and enhance the holding power of the sprayed material. B-Prepare the surface treatment before painting the back panels of mobile phones and laptops. ii.-Surface treatment before metal spray welding and titanium plating, such as sandblasting on the surface before brazing of super-hard grinding wheel and cemented carbide. 2. Surface treatment of glass and non-metallic materials: Colored glass, glass products, ceramic products, bamboo chips, wood products, composite non-metallic materials and other materials such as sandblasting, matting, polishing, matte treatment, etc. Rubber materials such as printing rubber rollers, rubber molds, PU materials, acrylic sheets, plastics and other materials are surface-etched. 3. Semiconductor industry:
White aluminum oxide used for surface treatment of aluminum alloy semiconductor components, surface treatment and sandblasting before vacuum sputtering; removal of impurities on the back of wafers. 4. Mold processing industry:
White aluminum oxide blasting media for surface treatment of metal molds, forged steel molds, forged aluminum molds, mold steel, carbon steel, and mold processing industries such as matte surface treatment after mold biting. For example, wire cutting molds, glass molds, tire molds, conductive rubber molds, shoe molds, bakelite molds, electroplating molds, button molds.
Packing & Delivery
※ 1ton/jumbo bag
※ Jumbo bag + Wooden pallets
※ 25kgs/bag, 40 bags/jumbo bag
※ 25kgs/woven bag or kraft paper bag
※ 25kgs/bag, 40 bags/jumbo bag
※ 25kgs/woven bag or kraft paper bag
※ All package can be customized according to customers’ requirements
white fused alumina, white fused alumina powder, white corundum, aluminum oxide
