Product name: Alumina polishing powder
Color: White
Chuanyan alumina polishing powder is a fused white alumina abrasive powder produced by crushing fused alumina and sorting the particles into a uniform size. The resulting compound has the following characteristics:
An α‑type corundum crystal configuration
At least a 96.0% pure aluminum oxide (Al2O3) composition
A hardness nearly equal to silicon carbide
A closely controlled particle-size distribution
A consistent particle shape
These characteristics make a superb choice for high-level surface polishing and as a material in items such as:
Super-finishing precision grindstones
Super-finishing lapping cloth or paper
Lapping tape for super-precision surface finishing
Precision lapping of materials such as metals, quartz crystal, and semiconductor having low tensile strength
Other characteristics include:
Chemically inert
Able to bear high temperatures
Extremely high insulation characteristics
Very consistent in its reaction to organic matter
Widely used as a high-grade filler for epoxy-resin insulators
Standard Specifications for Particle Size
| P/N | D50（um) |
| AP10 | 0.3-0.4 |
| AP20 | 0.4-0.5 |
| AP30 | 0.5-0.7 |
| AP40 | 1.2±0.3 |
| AP50 | 2±0.4 |
| AP60 | 3±0.4 |
| AP70 | 4±0.5 |
| AP80 | 5.5±0.6 |
| AP90 | 7±0.5 |
| AP100 | 8.4±0.6 |
| AP101 | 9.9±0.8 |
| AP102 | 11.9±1 |
| AP103 | 14.7±1 |
| AP104 | 17.9±1 |
| AP105 | 21.1±1.5 |
| AP106 | 26.4±2 |
| AP107 | 30.9±2 |
| AP108 | 36.1±2 |
| AP109 | 41.1±2.5 |
| AP200 | 49.4±2.5 |
| AP210 | 58.6±3 |