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Wear Resistant 997% Alumina Ceramic Parts High Temp Al2O3 Kiln Ceramic Roller
| Place of Origin | Handan |
|---|---|
| Brand Name | Norcera |
| Certification | ISO |
| Minimum Order Quantity | 1 Piece |
| Price | $1~$100 Per Piece |
| Packaging Details | Wooden Cages Or Carton Box |
| Delivery Time | 10-15 Work Days |
| Payment Terms | T/T |
| Supply Ability | 2000 Pieces Per Week |
Product Details
| Product Name | Alumina Ceramic Insulators Roller | Color | White Or Ivory |
|---|---|---|---|
| Material | Alumina Oxide (Al2O3) | Wear Resistance | High |
| Coefficientofthermalexpansion | 5.2 - 7.9 X 10⁻⁶/°C | Manufacturing | Sintering |
| Compressive Strength | 300 - 350 Kpsi | Thermal Conductivity | 18.0 - 28.0 W/mK |
| Operating Temperature | Up To 1600°C | Tensile Strength | 28 Kpsi |
| Electrical Insulation | High | Chemical Resistance | Excellent Against Acids And Alkalis |
| Density | 3.7 G/cm³ | Hardness | Mohs 9 |
| Tolerance | Up To ±0.02mm | Surface Roughness | Ra0.4±0.1μm |
| Applications | Electrical Insulation, Mechanical Support, High Temperature Environments | ||
| Highlight | Wear Resistant Alumina Ceramic Parts,Corrosion Resistant Alumina Parts,Alumina Parts Electrical Insulation |
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Product Description
Custom Non‑Standard High Performance Alumina Ceramic Insulators Wear Corrosion Resistant Electrical Insulation Parts
Alumina ceramic part is produced by firing a tightly packed powder form of Al2O3 which includes some binder material. Commercially available grades range from 90% up to 99.95% with the higher purity generating somewhat higher hardness. Alumina Ceramics are the most highly regarded and widely used of the ceramic products. It is non-conductive, resistant to corrosion, and are perfect for electrical insulation. Alumina Ceramic has proven to be the best ceramic for protection of vital electrical components. It can be processed as tubing, sheets, bars, rods, discs, and many other forms depending on the requirements of the project.
Alumina insulators are precision structural ceramic components manufactured from high-purity aluminum oxide (Al₂O₃). As core electrical insulation parts widely used in high-voltage, high-temperature and harsh industrial environments, they replace traditional plastic and ordinary porcelain insulators to deliver superior insulation stability, mechanical durability and chemical reliability.
Available in common purity grades of 95% and 99% alumina, these insulators feature a dense sintered crystalline structure. They possess extremely high volume resistivity up to 10¹⁴ Ω·cm at room temperature, maintaining excellent insulating performance even under elevated temperatures. With a high dielectric strength ranging from 25 kV/mm to 59 kV/mm and ultra-low dielectric loss, alumina insulators effectively prevent current leakage, arc discharge and electrical breakdown, ensuring safe and stable operation of electrical and electronic systems.
Alumina Oxide (Al2O3) Properties:
◆ High Hardness
Strong wear resistance, durable and not easy to wear.
◆ Excellent Thermal Conductivity
The thermal conductivity at room temperature is 30~40W/(m·K), which is higher than that of steel, copper and aluminum.
◆ Good Chemical Stability
Resistant to acid, alkali and salt corrosion.
◆ High Temperature Stability
Withstands 1600℃ high temperature and has high temperature stability.
Key Properties
- High working temperature up to 1600℃
- Excellent electrical insulation performance
- High bending strength & hardness
- Good resistance to acid‑base corrosion
- Custom dimensions and tolerances supported
Manufacturing Process:
Thermocouple protection tubes, furnace insulation components, heating element sleeves, electronic insulating parts, industrial high‑temperature equipment.
| Chemical Formula | Al2O3 | |
| Mechanical | Density | 3.7 gm/cc |
| Hardness |
2000 Knoop |
|
| Tensile Strength | 28 kpsi | |
| Modulus Of Elasticity | 41 - 46 x 106 psi | |
| Flexural Strength | 51 kpsi | |
| Compressive Strength | 300 - 350 kpsi | |
| Poissons Ratio | 0.21 | |
| Fracture Toughness | 4 - 5 MPa m½ | |
| Electrical | Dielectric Strength | 212 - 220 ac V/mil |
| Dielectric Constant | 9.3 (@ 1 MHz) | |
| Volume Resistivity | > 1014 ohm-cm | |
| Thermal | Coefficient Of Thermal Expansion | 5.2 - 7.9 x 10⁻⁶/°C |
| Thermal Conductivity | 18.0 - 28.0 W/mK | |
| Specific Heat | 0.21 cal/g °C | |
| Shock Resistance | 300 °C Diff. | |
Alumina Ceramics Typical Applications Include:
Wear resistant components,
High pressure nozzles,
Thermocouple tubes,
Electrical Insulators,
Corrosive labware,
Furnace fixtures,
Ballistic armor,
Thread guides,
Laser Tubes,
Pump seals.
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