Aluminum Oxide
Alumina (Al2O3) Description
Alumina (Aluminum oxide), Al2O3 has very high melting point, which is 2,072 °C and it is extremely hard. Alumina ceramic is the most common technical material and relatively traditional ceramic. High purity alumina has excellent performances in electrical insulation, high chemical resistance, and low thermal expansion.
Alumina can be produced in a range of purities with additives designed to enhance properties. A wide variety of ceramic processing methods can be applied including machining or net shape forming to produce a wide variety of sizes and shapes of component. In addition, it can be readily joined to metals or other ceramics using metallising and brazing techniques.
Alumina Ceramics Properties
Compound Formula |
Al2O3 |
Molecular Weight |
101.96 |
Appearance |
White |
Melting Point |
2,072° C |
Boiling Point |
2,977° C |
Density |
3.95 g/cm3 |
Tensile Strength |
44 kpsi |
Hardness |
2000 Knoop |
Hot Expansion Coefficient |
7.6 x 10-6/°C |
Fracture toughness |
4 – 5 MPa m½ |
Alumina Applications
Electronic substrates
Ballistic armour
Thermocouple tubes
Electrical insulators
Grinding media
Thermal couple protector
Laboratories
Alumina Products
Alumina Mortar and Pestle Set
Alumina Ball
Alumina Crucible
Alumina Tube
Alumina Rod
Alumina Plate
Alumina Foam