Features:
1) Materials: 95% alumina oxide, 99% alumina oxide
2) Application: Used for all kinds of electric heating equipment and electric
Equipment, and textile machinery
3) Good smooth and high strength
4) A variety of specifications available
5) OEM are welcomed
| Product Parameters | ||||
| Material Properties | Steatite Porcelain | Alumina Porcelain | Mullite Porcelain | |
| MgO-SiO2 | 75% AL2O3 | 95% AL2O3 | 3AL2O3·SiO2 | |
| Density（g/cm3） | 2.6-3.1 | 2.5-3.3 | 3.5-3.8 | 2.5-2.6 |
| Breaking Strength(Mpa) | 140-150 | 200-300 | 300 | 100-200 |
| Thermal Expansion Coefficient (x10-6mm/oC) | 7-7.5 | 6 | 6.5-8.0 | 4.4-5.6 |
| Water Absorptivity | 0 | 0 | 0 | 0 |
| Thermal Conductivity (W/m·k) | 2.5 | 10-15 | 17 | 3.9-6.1 |
| Volume Resistivity （Ω·cm） | 1012-1014 | 1013-1014 | >1014 | >1013 |
| Dielectric Constant (1MHz) | 6-7 | 7.5-9 | 8.6 | 6.4-7.3 |
| Dielectric Loss 1MHz(20oC) | (6-8)X10-4 | (3-5)X 10-4 | (2-3)X 10-4 | (14-18)X 10-4 |
| Dielectric Strenth (Kv/mm) | 25-30 | 25-30 | 30-35 | 20-25 |
| Sintering Temperature(oC) | 1350+20 | 1360+20 | 1650+20 | 1320+20 |
| Operating Temperature(oC) | <800 | <1000 | <1200 | <800 |