Alumina Rod Bar
Alumina Rod Bar
Portfolio: 95%, 96%, 99%, 99.5%, 99.7%, 99.95%
Diameter : 1-100 mm, customizable
Or email us at sales@heegermaterials.com.
Alumina Rod/Bar Data Sheet
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Reference Code: |
HM1975 |
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Purity: |
95%, 96%, 99%, 99.5%, 99.7%, 99.95% |
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Color: |
White |
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Density |
3.7-3.98 g/cm3 |
|
Diameter: |
1-100 mm, customized |
Alumina Rod Bar
Alumina rods are manufactured in a wide range of purities with additives designed to enhance their properties. Typical purities range from 90% to 99.9%. They offer exceptional resistance to high temperatures, corrosion, and mechanical stress. With a smooth surface, high hardness, and excellent electrical insulation properties, they perform reliably under demanding conditions. Advanced Ceramics Hub can supply customized solutions in terms of diameter, length, and surface finish to meet diverse industrial and research requirements.
Advantages of alumina Rod bars
- Excellent electrical insulation properties
- High hardness and mechanical resistance
- Resistant to wear and abrasion
- High thermal conductivity and thermal shock resistance
- Low density
- Resistant to attack by strong acids and alkalis at high temperatures
- Transparent to microwave radio frequencies
- High compressive strength and dielectric strength
- Highly specific thermal conductivity and thermal expansion indices
Applications of the alumina Rod Bar
- Industrial heating elements : These are used as support rods or insulating components in high-temperature furnaces.
- Mechanical stirring rods : These are used as corrosion-resistant stirring tools in chemical or materials processing.
- Electrical insulation rods : Used in electronic devices to insulate and support conductive parts.
- Grinding media : These serve as wear-resistant grinding bars in grinding or crushing equipment.
- High-temperature laboratory tools : These are used as sample holders or handling tools in high-temperature environments.
- Wear-resistant shaft bushings : Applied in mechanical systems as durable and high-temperature resistant shaft supports.
- Medical equipment : They are used as biocompatible components, such as support rods in surgical tools.
Electrical and Electronic Area
High-temperature Lab
High-temperature ovens
Aerospace
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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