Alumina ceramic is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, stable electrical performance characteristics. Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products. We can make the part by hot injection pressing, dry pressing, isostatic pressing and extrusion productive technology etc.
| Item | Index | Unit | Steatite ceramic | 95 Al2O3 | 99 Al2O3 | Mullite |
| Physical Characteristics | Bulk density | g/cm3 | 2.7 | 3.2 | 3.89 | 2.45 |
| Water absorption | % | 0 | 0 | 0 | 0 | |
| Mechanical Characteristics | Flexural strength | Mpa | 145 | 320 | 340 | 100 |
| Hardness Vickers | Gpa | 5.7 | 12.2 | 13.5 | 10 | |
| Thermal Characteristics | Thermal conductivity | w/(m.k) | 2.5 | 16 | 24 | 4 |
| Electrical Characteristics | Dielectric constant(1MHZ) | - | 6.2 | 9 | 9.4 | ? |