Customization: | Available |
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CAS No.: | 1344-28-1 |
Formula: | Al2O3 |
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Detection project | detection result | Detection project | detection result |
AL2O3 | 95% | Ti | 1.5-3.8% |
Fe | 0.5 | Crystal shape | Three - party crystal system |
Si | 0.3 | melting point | 2250° |
Moth hardness | 9.o | Knoop hardness | 2000-2200Kg/mm2 |
resistivity | 30-300-900-1600cm | Calcined brown corundum C | ≤0.05% |
Heat transfer coefficient | 900° room temperature | Low carbon brown corundum C | ≤0.10% |
Refractoriness | 1850° | Ordinary brown corundum C | ≤0.15% |
Refraction rate | e=1.760 w=1.768 | Microhardness | 1800-2200kg/mm2 |
linear expansion Coefficient | 7 - 9 (0 - 1600 C) | Maximum temperature | 1900° |
density | 3.9 | Magnetic substance | 2% |
specific heat | (Cal/g. C) 0.26 (20 - 90 C) | colour | Dark brown, after calcination become deep blue |