Alumina Heater
Alumina Heater
Purity: 95%, 96%, 99%, 99.5%, 99.7%, 99.95%
Or email us at sales@heegermaterials.com.
Technical specifications of the alumina heating device
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Reference Code: |
HM1982 |
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Purity: |
95%, 96%, 99%, 99.5%, 99.7%, 99.95% |
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Structure : |
Plate, rod, tube |
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Color: |
White or Ivory |
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Density |
3.7-3.98 g/cm3 |
Alumina heating
Alumina heating elements are highly reliable. The heating element is printed inside the alumina ceramic body and sintered as a single unit. The shape and power output can be easily adjusted, and multiple circuits can be designed for switching and temperature sensing functions. Alumina heating elements are widely used in the automotive, oil and gas equipment, and water heating industries. Advanced Ceramic Hub can provide customized solutions to meet diverse industry and research requirements.
Plate alumina heater 
Rod-type alumina heater 
Tube-type alumina heater
Basic structure of the alumina heater
Alumina heater property parameters
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Object |
Value |
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Maximum operating temperature |
MAX 1000℃ |
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Normal operating temperature |
MAX 800℃ |
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Thermal conductivity (20℃) |
18 W/(mK) |
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Specific heat (20℃) |
0.78×10 3 J/(kg-K) |
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Linear expansion coefficient (40-800℃) |
7.8× 10⁻⁶ /℃ |
Specifications of the alumina heater
Advanced Ceramics Hub can offer customized solutions for specific requirements, including complex shapes, through holes, bonding with metals, etc. Standard dimensions are as follows:
Plate type |
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Length/width |
160×160 mm or φ160 mm |
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Thickness |
0.3-5.4 mm |
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Tolerance |
Length (or width): |
20 or more: ±1% |
Less than 20: ±0.2 mm |
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Thickness |
1 or more: ±10% |
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Less than 1: ±0.1 mm |
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The war pages |
0.4/100 |
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Stem/Tube |
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Length |
Shaft: MAX 120 mm |
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Tube: MAX 200 mm |
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Outer diameter |
Shank: φ2-φ50 mm |
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Tube: φ3-φ20 mm |
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Tolerance |
Length |
50 mm or more: ±1% |
Less than 50 mm: ±0.5 mm |
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Outer diameter |
Φ10 or more: ±2% |
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Less than φ10 mm: ±0.2 mm |
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The war pages |
0.4/100 |
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Advantages of alumina heater
- Fast heating
- Small size and high wattage density
- High insulation
- Direct water and kerosene heating
- Vacuum environment
- Resistance to oxidation and chemicals
- Exit switching
- Temperature detection
- Long product lifespan
Applications of alumina heater
- Industrial heating : Used in high-temperature furnaces, heat treatment equipment and industrial drying systems, as they can operate stably at temperatures up to 1600°C.
- Electronics industry : Used as wafer heaters in semiconductor manufacturing or for precise localized heating in electronic component packaging.
- Medical devices : Applied in surgical tools (e.g., heating elements for cauterization) or laboratory equipment (e.g., incubators), thanks to their biocompatibility and corrosion resistance.
- Automotive industry : Used in oxygen sensors or exhaust gas treatment systems as heating elements to improve sensor efficiency.
- Household appliances : They can be found in appliances such as electric irons, coffee makers or space heaters, which take advantage of their rapid heating and even temperature distribution.
- Aerospace : Reliable heating in extreme conditions, such as high-temperature testing or propulsion systems.
Electrical and Electronic Area
Electrostatic chuck (ESC)
Automotive industry
Shower Toilet Ceramic heating element
Scanning electron microscopy (SEM)
Alumina Material Properties
Alumina Material Grades
Boron Nitride, with a glassy B2O3 binder, is highly machinable and suitable for most refractory applications. Grade A, used for over 50 years in legacy semiconductor and defense equipment, can produce components up to 410mm x 495mm x 245mm, but its hygroscopic binder needs moisture protection.
Grade A Composition:
- hBN>99.8%
Grade A Applications:
- High-temperature electrical insulators and vacuum furnace supports with electrical resistivity, strength, and thermal shock resistance.
- Crucibles and containers for high-purity molten metals.
- Insulators and fixtures for ion implantation systems requiring high temperature purity and electrical insulation.
- Radar components and antenna windows needing precise electrical and thermal properties.
- Setter plates for processing advanced materials requiring stable, inert surfaces.
- Nozzles for powdered metal spraying.
It’s a high-purity grade of Alumina (Aluminum Oxide) and one of the high-performance grades in this range of materials. It features a 99.7% purity Alumina base material that provides a superior set of mechanical and electrical properties while maintaining a reasonable cost. It is a very hard-wearing technical ceramic offering and is ideally suited to a wide range of industrial applications where mechanical and electrical performance is of the essence and the material needs to perform adequately in aggressive environments.
It can be machined in the “green state”- that is before sintering takes place, thus ensuring a large variety of shapes and sizes. It can also be diamond ground to tight tolerances in the fully sintered state using diamond grinding.
Physical Properties:
- Color: Ivory
- Density: 3.9 g/cm3
Applications:
- Electronic components & substrates
- High-temperature electrical insulators
- High voltage insulators
- Laser tubes
- Machined components
- Mechanical seals
- Precision shafts and axles in high-wear environments
- Roller and ball bearings
- Seal rings
- Semiconductor parts
- Shot blast nozzles
- Thermocouple tubes
- Tap plates
- Valve seats
- Wear components
- Wire and thread guides
- Ballistic Armor
99.5% Purity Alumina is a high-performance engineering material with exceptional mechanical strength, high-temperature resistance, and excellent electrical insulation properties. It is widely used in industrial equipment, electronic components, medical devices, and aerospace applications.
Physical Properties:
- Color: Ivory
- Density: 3.9 g/cm3
Applications:
- Electronic components & substrates
- High-temperature electrical insulators
- High voltage insulators
- Laser tubes
- Machined components
- Mechanical seals
- Precision shafts and axles in high-wear environments
- Roller and ball bearings
- Seal rings
- Semiconductor parts
- Shot blast nozzles
- Thermocouple tubes
- Tap plates
- Valve seats
- Wear components
- Wire and thread guides
- Ballistic Armor
99% Purity Alumina Is a premium industrial ceramic material with excellent mechanical properties, ultra-high hardness, high-temperature resistance, and insulation performance. It can maintain stable chemical and physical properties even in extreme environments, making it widely used in semiconductors, electronic components, laser technology, and aerospace.
Physical Properties:
- Color: Ivory
- Density: 3.85 g/cm3
Applications:
- Electronic components & substrates
- High-temperature electrical insulators
- High voltage insulators
- Laser tubes
- Machined components
- Mechanical seals
- Precision shafts and axles in high-wear environments
- Roller and ball bearings
- Seal rings
- Semiconductor parts
- Shot blast nozzles
- Thermocouple tubes
- Tap plates
- Valve seats
- Wear components
- Wire and thread guides
- Ballistic Armor
It is a regular purity grade Alumina (Aluminum Oxide) and it is one of the workhorses of the technical ceramics industry. It features a 96% purity Alumina base material providing a balanced “cost to quality” ratio. It is a hard-wearing technical ceramic offering an excellent combination of both mechanical and electrical properties and is ideally suited to a wide range of industrial applications where cost is of the essence, but the material still needs to perform adequately from a mechanical and electrical standpoint.
It can be machined in the “green state”- that is before sintering takes place, thus ensuring a large variety of shapes and sizes. It can also be diamond ground to tight tolerances in the fully sintered state using diamond grinding.
Physical Properties:
- Color: White
- Density: 3.75 g/cm3
Applications:
- Electronic components & substrates
- High-temperature electrical insulators
- High voltage insulators
- Laser tubes
- Machined components
- Mechanical seals
- Precision shafts and axles in high-wear environments
- Roller and ball bearings
- Seal rings
- Semiconductor parts
- Shot blast nozzles
- Thermocouple tubes
- Tap plates
- Valve seats
- Wear components
- Wire and thread guides
- Ballistic Armor
95% Purity Alumina is an economical and practical engineering material. Its slightly lower alumina content reduces production costs while maintaining decent wear resistance and processing flexibility. It is commonly used in mechanical parts, electrical insulators, and wear-resistant bushings, offering an excellent cost-performance balance.
Physical Properties:
- Color: White
- Density: 3.7 g/cm3
Applications:
- Electronic components & substrates
- High-temperature electrical insulators
- High voltage insulators
- Laser tubes
- Machined components
- Mechanical seals
- Precision shafts and axles in high-wear environments
- Roller and ball bearings
- Seal rings
- Semiconductor parts
- Shot blast nozzles
- Thermocouple tubes
- Tap plates
- Valve seats
- Wear components
- Wire and thread guides
- Ballistic Armor
Alumina Ceramic Machining
Alumina ceramics are produced through methods such as injection molding, die pressing, isostatic pressing, slip casting, and extrusion. After sintering and densification, machining requires diamond grinding techniques. Advanced Ceramic Hub utilizes cutting-edge green and biscuit machining technology to produce more complex components with traditional methods. Our advanced machining center includes drilling, grinding, milling, polishing, sawing, tapping, threading, and turning, enabling the manufacture of alumina ceramic components with tight tolerances and high complexity. During the machining process, the following precautions should be observed:
- Shrinkage Control: Alumina ceramics shrink by about 20% during sintering, requiring dimensional adjustments in the green body stage.
- Tolerance Control: Precise tolerances are unachievable in the green or pre-sintered state; fine machining should follow sintering.
- Diamond Grinding: Post-sintering, high-hardness alumina requires diamond grinding, as conventional methods fall short.
- Tool Selection: Diamond-coated tools or grinding wheels are essential to handle ceramic hardness and prevent tool damage.
- Temperature Control: Strict temperature management during sintering prevents cracking or deformation.
- Stress Management: Excessive stress during machining must be avoided to prevent brittle failure.
- Cutting Speed and Feed Rate: Controlled speeds and feeds ensure quality and extend tool life.
- Surface Treatment: Post-machining polishing removes defects, enhancing performance and appearance.
Alumina Ceramic Packaging
Alumina Ceramic products are typically packaged in vacuum-sealed bags to prevent moisture or contamination and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.
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