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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.

  • Corundum-mullite Tubes

    Corundum-mullite Tubes

    Corundum-mullite tube is a high-performance refractory ceramic component manufactured by precise high-temperature sintering of alumina and mullite composite raw materials. Combining the superior
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  • Alumina Tube

    Alumina Tube

    Here shows 20 frequently asked questions of alumina tube, including but not limited to its advantages, properties, sizes, and applications, etc.
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  • Alumina Oxide Ceramic

    Alumina Oxide Ceramic

    Alumina oxide ceramics have unique properties that can meet the diverse needs of electronics, aerospace, automotive, medical and other industries. Their characteristics are as follows:. - High
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  • Sintered Alumina Ceramic

    Sintered Alumina Ceramic

    Material : Al2O3 Ceramic. Density : 3.50-3.90 g/cm3. Color : White, Ivory, Pink. Max. Working Temperature : 1,000-1,800 degree C.
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  • Alumina Ceramic Tube

    Alumina Ceramic Tube

    Purity : 95-99.8% Al2O3. Density : 3.7-3.92 g/cm3. Color : White, Ivory, Pink. Max. Using Temperature : 1,500-1,750 degree C.
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  • Aluminum Oxide Ceramic

    Aluminum Oxide Ceramic

    Material : Al2O3 Alumina. Purity : 90-99.8%. Density : 3.60-3.95 g/cm3. Hardness : 8-9 Mohs. Maximum Using Temp. : 1000-1800 degree C
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  • Alumina Ceramic Rods

    Alumina Ceramic Rods

    Material : Alumina Ceramic. Purity : 90-99.8%. Density : 3.60-3.95 g/cm3. Hardness : 8.0-9.0 Mohs. Max. Service Temperature : 1,200-1,650℃
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  • Alumina Oxide Ceramic Plate

    Alumina Oxide Ceramic Plate

    Alumina oxide ceramic plates can be widely used in the manufacture of bearings, seals, bushings and other mechanical components, as well as electronic components, medical equipment, etc. They have
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  • Alumina Ceramic Ring

    Alumina Ceramic Ring

    Alumina ceramic rings can be manufactured by dry pressing, isostatic pressing, extrusion and slip casting, etc. They play an important role in the fields of mechanical engineering, electronic
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  • 99 Alumina Ceramic Components

    99 Alumina Ceramic Components

    99 alumina ceramic components are composed of 99% pure alumina, which exhibits excellent mechanical, electrical, chemical, and thermal properties. Its high operating temperature, along with
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  • Alumina Parts

    Alumina Parts

    Material : High Al2O3. Density : 3.60-3.90 g/cm3. Color : White, Ivory, Pink. Max. Service Temp. : 1400-1800 degree C.
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  • 95 Alumina Ceramic Parts

    95 Alumina Ceramic Parts

    95% alumina ceramic parts are frequently used as wear-resistant components, as well as used in high temperature environments and insulation applications due to their superior wear resistance, heat
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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 99.8% 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 al2o3 precision part

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

 

ITEM UNIT A950 A990 A995 A998
Material - 95%Al2O3 99%Al2O3 99.5%Al2O3 99.8%Al2O3
Colour - White Ivory Ivory Ivory
Density g/cm3 3.70 3.85 3.90 3.92
Vickers Hardness Gpa 14 17 17.5 17.5
Flexual Strength Mpa 310 360 370 380
Compressive Strength Mpa 2,200 2,500 2,600 2,650
Electrical Resistivity Ω·cm ≥1014 ≥1014 ≥1014 ≥1014
Dielectric Strength KV/mm 15 17 17.5 17.5
Dielectric Constant 1MHz 8 9 9.5 9.6
Max. Working Temp. ℃ 1,500 1,650 1,700 1,700
Thermal Conductivity (25℃) W/m·k 25 29 30 30.5
Resistance to Thermal Shock △T(℃) 210 230 235 235

 

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.

Al2O3 components2

 

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.

alumina machining1

 

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

 

Al2O3 alumina plate CNC1

 

Typical Alumina Ceramic Applications 

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.

     QQ20260723-163300

High-Temp. Sintering Furnaces

Stable sintering process ensuring density and mechanical consistency.

        QQ20260723-163543

Precision CNC Machining

Grinding, polishing, drilling for tight tolerance ceramic components.

        CNC

 

 
Quality System & Certifications
 

We follow strict quality management systems to ensure stable and reliable ceramic products for global customers. We're GB/T19001-2016/ ISO9001:2015 certified.

 

 

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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