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Alumina Ceramic

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UNIPRETEC: Alumina Ceramic Manufacturer & Supplier

 

Solid Industry Experience
Founded in 2014, UNIPRETEC has more than 10 years of experience in advanced technical ceramics. We support global customers with stable alumina ceramic materials and precision components for electronics, semiconductor, mechanical and high-temperature industries.

 

Advanced Manufacturing Capability
Our factory is equipped with modern ceramic forming systems, high-temperature sintering furnaces and precision CNC machining equipment, enabling us to produce alumina ceramic parts with consistent quality and tight tolerances.

 

Professional Engineering Support
Our technical team provides material selection advice and application-based solutions. From standard alumina ceramic parts to complex custom designs, we help customers reduce risk and improve performance.

 

Strict Quality Control
Each batch of alumina ceramic products undergoes dimensional inspection, material testing and performance verification to ensure stable and reliable delivery.

  • Ceramic Insulator Tube For Fuse

    Ceramic Insulator Tube For Fuse

    A ceramic insulator tube for a fuse is a vital part of electrical setups. Made of ceramic, it
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  • Alumina Cylindrical Crucible

    Alumina Cylindrical Crucible

    Alumina cylindrical crucibles are used in laboratory settings for heating, melting or calcining
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  • Alumina Technical Ceramic

    Alumina Technical Ceramic

    Alumina technical ceramic is a widely used advanced ceramic that is cost-effective when compared to
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  • Alumina Single Bore Tubes

    Alumina Single Bore Tubes

    Alumina single bore tubes have a melting point of over 2000°C and exhibit excellent performance in
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  • Corundum Mullite Ceramic

    Corundum Mullite Ceramic

    Corundum mullite is a high-temperature resistant ceramic that is widely used in refractory linings,
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  • Nonporous Alumina Ceramic Tubes

    Nonporous Alumina Ceramic Tubes

    Non-porous alumina ceramic tubes are formed by extrusion, slip casting or dry pressing, and then
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  • Aluminum Oxide Sleeve

    Aluminum Oxide Sleeve

    Aluminum oxide sleeves offer versatility and can be used in bearings, bushings, insulators and wear
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  • Alumina Boat

    Alumina Boat

    Alumina boats are durable and heat-resistant boats with excellent chemical inertness and mechanical
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  • Custom Alumina Parts

    Custom Alumina Parts

    Custom alumina parts feature high hardness, excellent mechanical strength, wear resistance, and
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  • Closed End Ceramic Tubes

    Closed End Ceramic Tubes

    Closed-end ceramic tubes play an important role in thermocouple applications, providing excellent
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  • Alumina Tube Double Bore

    Alumina Tube Double Bore

    Alumina tubes with double bores are designed to meet the needs of high-temperature environments and
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  • 99 Al2O3 Tube

    99 Al2O3 Tube

    99% Aluminum Oxide is ideally suited for use in harsh industrial environments, and its high purity
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Alumina Ceramic Customization Capabilities
 
01/

Custom Dimensions & Shapes

  • Custom size, thickness and geometry.
  • Machined according to drawings or samples.
02/

Material Grades

  • 95%, 96%, 99%, 99.5% and 99.7% alumina.
  • Balanced selection between performance and cost.
03/

Precision Machining

  • CNC grinding, drilling and polishing.
  • Tight tolerance control for functional components.
04/

OEM & ODM Support

  • Prototype development and mass production.
  • Engineering support throughout the project.

 

7

How to Cooperate on Alumina Ceramic Projects

Application Understanding
Share your application requirements, working conditions and performance expectations. Our engineers evaluate feasibility and material selection.

 

Technical Proposal
We provide a technical solution including material grade, manufacturing method, tolerance and estimated lead time.

Drawing Confirmation

Confirm drawings, specifications and quality requirements.

Sample Production

Prototype or sample production for testing and approval.

Mass Production

Stable production under strict quality control.

Inspection & Delivery

Final inspection and secure global shipment.

 

 
Engineering Advantages of Alumina Ceramic
 
01/

High Hardness & Wear Resistance

  • Hardness close to sapphire level
  • Excellent resistance to abrasion and erosion
  • Ideal for long-life mechanical components
02/

Thermal & Chemical Stability

  • Stable up to 1600°C working environments
  • Excellent resistance to acids and alkalis
  • Suitable for harsh industrial conditions
03/

Electrical Insulation Performance

  • High dielectric strength
  • Low dielectric loss
  • Widely used in electronic & power systems
04/

Flexible Custom Manufacturing

  • OEM & ODM ceramic components
  • Complex shapes and tight tolerances
  • Support for small batch & mass production
Alumina Ceramic Components

Where Alumina Ceramic Is Used

Electronics & Semiconductor
Used in substrates, insulating components, wafer handling parts, and vacuum systems.

 

Mechanical & Wear Parts
Ideal for seals, liners, nozzles, bearings, and guide components under high wear conditions.

 

Energy & Chemical Industry
Applied in high-temperature, corrosive, and electrically demanding environments.

Typical Alumina Ceramic Specifications

 

Grade Al₂O₃ Content Density (g/cm³) Flexural Strength (MPa) Max Working Temp (°C)
95% Alumina ≥95% 3.6 300 1500
96% Alumina ≥96% 3.7 320 1550
99% Alumina ≥99% 3.9 380 1600
Typical Alumina Ceramic Specifications

 

Grade Al₂O₃ Content Density (g/cm³) Flexural Strength (MPa) Max Working Temp (°C)
95% Alumina ≥95% 3.6 300 1500
96% Alumina ≥96% 3.7 320 1550
99% Alumina ≥99% 3.9 380 1600
Common Types of Alumina Ceramic Products

 

Alumina Ceramic Tubes & Rods

Used in insulation, thermocouples, furnaces, and high-temperature protection systems.

Alumina Ceramic Plates & Discs

Flat components for substrates, wear plates, seals, and electronic insulation.

Precision Alumina Ceramic Parts

Customized shapes with tight tolerances for mechanical and semiconductor equipment.

Alumina Ceramic Substrates

Used in power electronics, LED modules, and circuit insulation applications.

High Alumina Ceramic Balls

 

Alumina Ceramic Material Grades Explained

95% Alumina
Cost-effective solution with good mechanical strength and insulation performance, suitable for general industrial use.

 

96%–97% Alumina
Balanced performance between strength, wear resistance, and thermal stability.

 

99% Alumina
High purity grade for semiconductor, electronic, and high-temperature precision applications.

High Alumina Ceramic Balls

 

Manufacturing Process of Alumina Ceramic

Powder Preparation
High-purity alumina powder with controlled particle size distribution.

 

Forming
Dry pressing, isostatic pressing, injection molding, or extrusion based on part geometry.

 

Sintering
High-temperature sintering to achieve required density and mechanical properties.

 

Precision Machining
CNC grinding, polishing, and drilling for tight tolerance components.

Precautions for Using Alumina Ceramic Components

 
1

Avoid Impact Loading

Although alumina ceramic is very hard, it is brittle and should not be subjected to sudden impact.

2

Check Assembly Tolerances

Proper clearance design is required to avoid stress concentration during installation.

3

Confirm Working Environment

Please confirm temperature, pressure, and chemical exposure before material selection.

How Engineers Cooperate with UNIPRETEC

From drawing to delivery, we focus on efficiency, feasibility, and reliability.

Send Your Drawing or Application

2D / 3D drawings or working condition description.

01

Material & Process Evaluation

We recommend suitable alumina grade and manufacturing method.

02

Sample & Mass Production

Prototype approval → stable batch production.

03

Our Service Commitment

Material selection & engineering consultation

OEM & ODM ceramic component manufacturing

Strict quality inspection and traceability

Global logistics support and technical after-sales

 

Aluminum Oxide Ceramic Plate

 

Typical Alumina Ceramic Applications Delivered

Semiconductor Equipment Manufacturer
Supplied high-purity 99% alumina ceramic parts used in wafer handling and insulation systems. Improved service life and reduced contamination risk.

 

Industrial Furnace Producer
Customized alumina ceramic tubes and liners for continuous high-temperature operation above 1400°C.

 

Power Electronics Integrator
Alumina ceramic substrates supplied for insulation and heat dissipation in power modules.

 

Our Factory & Production Equipment
 

 

Ceramic Forming Workshop

Dry pressing, isostatic pressing, injection molding equipment.

High-Temperature Sintering Furnaces

Stable sintering process ensuring density and mechanical consistency.

Precision CNC Machining

Grinding, polishing, drilling for tight tolerance ceramic components.

Quality System & Certifications
 

We follow strict quality management systems to ensure stable and reliable ceramic products for global customers.

 

Sintered Alumina Ceramic

Our Partners
 

We cooperate with customers and partners from electronics, energy, semiconductor, and industrial equipment sectors.

 

Alumina Parts

FAQ section for Alumina Ceramic

 

Q: What is alumina ceramic mainly used for?

A: Alumina ceramic is widely used for insulation, wear-resistant parts, substrates, and high-temperature components in various industries including electronics, automotive, and aerospace.

Q: What is the recommended purity for alumina ceramic?

A: 95-96% purity is suitable for general industrial uses, while 99% purity is preferred for applications requiring high precision or working at elevated temperatures, such as semiconductors and electronics.

Q: Can alumina ceramic be customized?

A: Yes, alumina ceramic components can be custom-manufactured to meet specific designs, sizes, and shapes based on your requirements. We offer both OEM and ODM services.

Q: Is alumina ceramic brittle?

A: While alumina ceramic is hard and abrasion-resistant, it can be brittle. Proper handling, design, and installation are necessary to avoid breakage under stress.

Q: What tolerances can you achieve for alumina ceramic parts?

A: Depending on the geometry, we can achieve tight tolerances from ±0.01mm to ±0.05mm after precision machining.

Q: Do you support small batch orders for alumina ceramic parts?

A: Yes, we are equipped to support small batch orders for prototypes or limited production runs. Customization is available for both small and large batches.

Q: What details are required for an alumina ceramic quotation?

A: We require a drawing, the material grade, order quantity, and the environmental application to provide an accurate quote.

Q: What is the typical lead time for alumina ceramic products?

A: Sample production typically takes 2–4 weeks, while mass production lead times are generally 4–6 weeks, depending on the complexity of the parts.

Q: Can alumina ceramic be used in corrosive environments?

A: Yes, alumina ceramic has excellent resistance to most chemicals and is suitable for use in corrosive environments.

Q: How do I start cooperation with UNIPRETEC for alumina ceramic?

A: Simply provide your project details, including drawings or applications, and our engineering team will assist with the next steps.

Q: Is alumina ceramic available in different shapes and sizes?

A: Yes, alumina ceramic can be produced in various shapes such as plates, rods, tubes, and custom configurations based on your needs.

Q: What is the hardness of alumina ceramic?

A: Alumina ceramic typically has a hardness of 9 on the Mohs scale, making it highly resistant to wear and abrasion.

Q: How does alumina ceramic compare to other ceramics?

A: Alumina ceramic is often favored for its excellent mechanical properties, high temperature resistance, and electrical insulating capabilities, compared to other ceramic materials.

Q: Can alumina ceramic be used in electrical applications?

A: Yes, alumina ceramic is an excellent electrical insulator and is commonly used in components such as substrates for electronics, insulators for high-voltage systems, and circuit boards.

Q: Can alumina ceramic be used at high temperatures?

A: Alumina ceramic is well-suited for high-temperature applications, withstanding up to 1,800°C in some cases, depending on the material grade.

Q: What is the maximum temperature alumina ceramic can withstand?

A: The maximum operating temperature for alumina ceramic is generally around 1,800°C, making it suitable for high-heat applications.

Q: Is alumina ceramic environmentally friendly?

A: Yes, alumina ceramic is non-toxic and environmentally friendly, as it does not release harmful substances during use or disposal.

Q: How do I clean alumina ceramic components?

A: Alumina ceramic can be cleaned using water, mild detergents, or solvent-based cleaners. For stubborn dirt, ultrasonic cleaning may be employed.

Q: Can alumina ceramic be used in food processing?

A: Yes, alumina ceramic is commonly used in food processing for components like bearings, pumps, and mixers due to its inert properties and resistance to wear.

As one of the most professional alumina ceramic manufacturers and suppliers in China, we're featured by good service and competitive price. Please rest assured to wholesale high quality alumina ceramic for sale here from our factory.

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