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White fused alumina coated abrasives P grain P180~P220 has a more aggregative distribution than F grain, with sharpness and evenly distributive features, bringing more efficiency for surface treatment. White fused alumina P grain is widely used in coated abrasive such as abrasive cloth, abrasive paper, abrasive belts, etc. FEPA-standard 43-1:2006: grains of fused alumina, silicon carbide, and other abrasive materials for coated abrasives macro grits P 12 to P 220.
Introduce white fused alumina coated abrasives P grain P180~P220:
White fused alumina is a very high purity aluminium oxide and thus recommended when contamination is an issue to be considered. It is obtained from the fusion of high purity calcined alumina in electric arc furnaces. The result is a product with high hardness, high friability, high purity, high melting point, and large crystal size. The main difference between white and brown fused alumina is purity and friability. White is highly pure and highly friable, breaking down quickly.
Chemical composite and of white fused alumina coated abrasives P grain P180~P220:
| Al2O3 | Na2O | Fe2O3% | SiO2 |
| ≥99 | ≤0.4 | ≤0.1 | ≤0.02 |
Physical properties of white fused alumina coated abrasives P grain P180~P220:
| Hardness: | Mohs:9.0 |
| Maximum service temperature: | 1900 Degree |
| Melting Point: | 2250 Degree |
| Specific Gravity: | 3.95g/cm3 |
| Volume density | 3.6g/cm3 |
| Bulk density(LPD): | 1.55-1.95 g/cm3 |
| Colour: | White |
| Particle shape: | Angular |
Particle size distribution of white fused alumina coated abrasives P grain P180~P220:
| Grit designation | Mean Diameter in µm |
| P 100 | 162 |
| P 120 | 125 |
| P 150 | 100 |
| P 180 | 82 |
| P 220 | 68 |
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