Introduction Alumina ceramic rod
Industrial 99% al2o3 alumina insulation ceramic rod is with low cost and good quality. It can be quickly cut to precision lengths. Their excellent combinations of material properties make them suitable for a wide range of demanding thermal, chemical, wear and electrical applications.
High purity alumina ceramic tube alundum tube fire pipe rod.
1. Material:95% or 99% alumina
2. Length:20mm-2500mm
3. Good Surface and Precise Size, High quality
4. Customize
Forming methods includes
- drying pressing
- isostatic pressing
- hot pressing casting
Characteristics Alumina ceramic rod
- High Mechanical Strength
- High Thermal Conductivity
- High Spalling Resistance
- High Softening Temperature
- Excellent Insulativity
- Etching Resistance
Technical Data Sheet of Alumina ceramic rod
Item | Test condition | Unit | 96% alumina ceramics | 99% alumina ceramics | 99.5-99.7% alumina ceramics |
Chemical ingredients | Al2O3 | Al2O3 | Al2O3 | ||
Bulk Density | g/cm3 | >3.6 | 3.88 | 3.90 | |
Max. Use Temp. | 1450℃ | 1600℃ | 1650℃ | ||
Water absorption | % | 0 | 0 | 0 | |
ROHS Hardness | ≥85 | ≥89 | ≥89 | ||
Flexural strength | 20℃ | Mpa(psix10^3) | 358(52) | 550 | 550 |
Compressive Strength | 20℃ | Mpa(psix10^3) | 2068(300) | 2600(377) | 2600(377) |
Fracture Toughness | K(l c) | Mpa m^1/2 | – | – | – |
Coefficient of thermal expansion | 25-1000℃ | 1X10^-6/℃ | 7.6 | 7.9 | 8.2 |
Coefficient of thermal conductivity | 20℃ | W/m.K | 16 | 17-30.0 | 17-30.4 |
Thermal Shock Resistance | ^Tc | ℃ | 250 | 200 | 200 |
Dielectricity constant | 1MHz.25℃ | 9 | 9.7 | 9.7 | |
Dielectric strength | ac-kV/mm(ac V/mil) | 8.3(210) | 8.7(220) | 8.7(220) | |
Volume Resistivity | 100℃ | ohm-cm | >10^13 | >10^14 | >10^14 |