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High Thermal‑Shock Resistance Al2O3 Alumina Gas‑Jacketed Furnace Pretective Sleeve
| Place of Origin | Handan |
|---|---|
| Brand Name | Norcera |
| Certification | ISO |
| Document | Alumina Ceramics Applicatio...on.pdf |
| Minimum Order Quantity | 1 Piece |
| Price | 1$~100$ |
| Packaging Details | Wooden Cages Or Carton Box |
| Delivery Time | 10-15 Work Days |
| Payment Terms | T/T |
| Supply Ability | 200 Pieces Per Week |
Product Details
| Product Name | Alumina Gas‑Jacketed Sleeve | 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 | high temperature alumina parts,electrical insulation alumina parts,high temperature alumina ceramic parts |
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Product Description
High Thermal‑Shock Resistance Alumina Gas‑Jacketed Furnace Sleeve
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. It is possible to machine alumina using diamond grinding techniques. Polishing is also possible, with the degree attainable affected by alumina grain size and production technique, like pressed or extruded.
Our alumina gas‑jacketed sleeve is a high‑performance ceramic component manufactured from high‑purity alumina material. Featuring a thick‑layer gas‑jacketed structural design, this ceramic sleeve serves as inner lining protection for high‑temperature furnaces, reaction chambers and thermal processing equipment.
The outstanding thermal stability of alumina enables the sleeve to withstand continuous high‑temperature operating conditions, offering excellent resistance to thermal shock, corrosion and chemical erosion. The gas‑jacketed allows circulating protective gas to pass through, achieving uniform temperature field control, thermal insulation and isolation between process atmosphere and furnace hardware. It effectively protects furnace body parts from high‑temperature oxidation and corrosive medium damage.
Precision‑formed and high‑temperature sintered, this alumina gas‑jacketed sleeve delivers tight dimensional tolerance, smooth inner and outer surfaces, low gas permeability and outstanding mechanical strength. It is widely applied in tubular furnaces, sintering furnaces, thermal treatment systems, material synthesis and other high‑temperature industrial and laboratory scenarios. Custom dimensions and wall‑thickness specifications are available to match diverse equipment requirements.
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.
| 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. | |
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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