Alumina
Aluminium oxide (British English) or aluminum oxide (American English) is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium(III) oxide.
| S.NO | CHARACTERISTICS | VALUE |
|---|---|---|
| 1 | Principal Constituent Al2O3 Purity | >99.9% Al2O3 |
| 2 | Tolerance | +/-2% |
| 3 | Sintering Additives | Nil |
| 4 | Appearance | Pearl White |
| 5 | It is optically transparent in the near-ultraviolet, visible and infrared regions | Nil |
| 6 | Apparent Density | >3.89 g/cc |
| 7 | Grain Size | ~10 µm |
| 8 | Open Porosity | Nil |
| 9 | Hardness (Knoop 100g) | 23000 MPa |
| 10 | Compressive Strength | 3500 MPa |
| 11 | Bending Strength | 300 MPa |
| 12 | Modulus of Elasticity | 380 GPa |
| 13 | Melting Point | 2030oC |
| 14 | Maximum Working Temperature | 1800oC |
| 15 | Specific Heat | 900J/KgK |
| 16 | Thermal Conductivity at 100oC | 30 W/mK |
| 17 | Thermal Conductivity at 1000oC | 5 W/mK |
| 18 | Coefficient of Linear Expansion between 0-1000oC | ~8.5 x 10-6/K |
| 19 | Emissivity at 1000oC | ~21% |
| 20 | Surface Finish | 3 triangle or better |
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99.9% Alumina Cylindrical Shape Crucibles
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99.9% Bowl Shaped Alumina Crucible
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99.9% Low Form Alumina Crucible
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99.9% Conical Alumina Crucible
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99.9% Alumina Boats
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99.9% Alumina Trays
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99.9% Semi Circular Alumina Boat
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99.9% Alumina Dish
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99.9% Alumina Disc
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99.9% Alumina Plate
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99.9% Alumina Substrate
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99.8 % Recrystallized Alumina Tube
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99.9% Alumina Rod
