Brown Fused Aluminum Oxide powders are the perfect material specifically manufactured to be used for general abrasive applications in bonded abrasive tools, and lapping and polishing processes. While aluminum Oxide has lower hardness and abrasive capacity than Diamond, Boron Carbide, and Silicon Carbide, it is widely used for grinding ferrous materials, finishing tough and hard materials, filling up ceramic parts when the processing cost is important. Brown Fused Aluminum Oxide is offered in macro and micro powder form, in both P and FEPA grades.
Chemical Composition
| Grit Size | AI2O3 | Fe2O3 (Iron Oxide) | CaO (Calcium Oxide) | Titanium Oxide (TiO2) |
| mass % min. | mass % – max | mass % – max | mass % – max | |
| F12-F20 | 95 | 0.3 | 0.3 | 1.8 |
| F24-F90 | 95 | 0.3 | 0.3 | 1.8 |
| F100-F120 | 95 | 0.4 | 0.4 | 1.8 |
| F150-F180 | 95 | 0.5 | 0.4 | 1.8 |
| F230-F280 | 96 | 0.4 | 0.5 | 1.8 |
| F320-F600 | 95 | 0.4 | 0.5 | 1.8 |
| F800-F1000 | 94 | 0.5 | 0.5 | 1.8 |
| F1200 | 95 | 0.5 | 0.7 | 1.8 |
Physical Data
| Structure: | Monocrystalline |
| Particle shape: | Blocky, sharp edged |
| Color: | Brown |
| Friability: | Tough |
| Knoop hardness (100 scale): | 2040 |
| Bulky density: | ANSI B74.12-1988 |
| Specific gravity: | 3.99 |