White fused alumina 1-3mm
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 alpha-Al2O3.The white alumina produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved..
White fused alumina physical properties and chemical composition
Physical Properties |
||
1 |
Color |
White |
2 |
Hardness: Mohs |
9.0 |
3 |
Bulk density |
1.75-1.95 g/cm3 |
4 |
Specific Gravity |
3.95g/cm3 |
5 |
Melting Point |
2250℃ |
6 |
maximum operation temperature |
1900℃ |
Typical Chemical Analysis |
||
1 |
Total Al2O3 |
≥99.3% |
2 |
Total Fe2O3 |
≤0.05% |
3 |
TotalNa2O |
≤0.3% |
White fused alumina packaging