Properties of white corundum
White Corundum was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase α-Al2O3.
Properties of white corundum
| Whiteness | ≥85 |
| Magnetic Substance | ≤20ppm |
| Oil Factor | ≤8% |
| PH Value | 8.5±1.5 |
| Electric Conductivity | ≤200μS/cm |
| Refractoriness | 2100℃ |
| Buld Density | 1.75-1.95g/cm3 |
| True Density | 3.95-3.97g/cm3 |
| Mohs Hardness | 9.0 |
| Crystal Form | 三方晶体 |
