Product Specification

Density	3.85 ~ 3.95 g/cm³	Thermal conductivity	20～35 W/m·K
Size	Diameter 38.8*44*34.8 mm	Wechsler hardness	26 gpa
Payment Terms	T/T	Delivery Time	2-4 weeks
Crystal Material	Alumina ceramic	Purity	99.9%
Brand Name	zmsh	Model Number	Alumina ceramic parts
Place of Origin	China
High Light	High temperature Alumina ceramic parts ，customization Alumina ceramic parts ，High Temperature Resistance Alumina Ceramic Parts

Description

ZMSH supplies custom high-purity alumina ceramic parts manufactured from Al₂O₃ ceramic materials with purity levels up to 99.9%.

These components are designed for applications requiring a combination of electrical insulation, mechanical strength, dimensional stability, wear resistance, corrosion resistance and high-temperature performance.

Compared with ordinary industrial ceramic components, high-purity alumina ceramics are particularly suitable for precision equipment where material purity, dimensional accuracy and contamination control are important.

Our alumina ceramic components can be manufactured according to customer drawings, samples or application requirements and are suitable for semiconductor equipment, vacuum systems, electronic equipment, high-temperature processing systems, precision instruments and other demanding industrial applications.

 

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Typical Material Properties

Property	Typical / Reference Value
Material	Alumina Ceramic (Al₂O₃)
Purity	Up to 99.9%
Density	Approx. 3.9–3.95 g/cm³
Vickers Hardness	Approx. 17–18 GPa
Thermal Conductivity	Approx. 30–35 W/m·K at room temperature
Coefficient of Thermal Expansion	Approx. 8 × 10⁻⁶/K
Electrical Insulation	Excellent
Water Absorption	Near zero for dense ceramic
Maximum Use Temperature	Up to approximately 1700–1750°C under suitable no-load conditions
Chemical Resistance	Excellent against many chemicals and process environments
Surface Finish	Customizable according to application
Dimensions	Custom according to drawing

Note: Material properties may vary depending on alumina purity, forming process, sintering conditions and component geometry. Final specifications should be confirmed according to the required ceramic grade and drawing.

 

Product Highlights

· 99.9% high-purity alumina ceramic

· Precision machining according to customer drawings

· Excellent electrical insulation

· High hardness and wear resistance

· High-temperature stability

· Good chemical and corrosion resistance

· Low contamination for demanding industrial environments

· Suitable for semiconductor processing equipment

· Custom holes, slots, steps, threads and complex geometries available

 

Custom Alumina Ceramic Machining

Instead of supplying only standard ceramic shapes, we focus on drawing-based custom alumina ceramic components.

Depending on component geometry and tolerance requirements, available structures may include:

· Ceramic rings

· Ceramic sleeves

· Ceramic bushings

· Ceramic spacers

· Ceramic insulators

· Ceramic positioning components

· Ceramic plates

· Ceramic discs

· Ceramic nozzles

· Ceramic support parts

· Ceramic sealing components

· Ceramic vacuum components

· Semiconductor equipment ceramic parts

Features such as precision holes, grooves, slots, steps, recesses, counterbores and complex profiles can also be evaluated according to the customer's drawing.

For precision projects, customers are encouraged to provide PDF, DWG, DXF or STEP drawings for technical review.

 

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Why Use High-Purity Alumina Ceramic?

1. Excellent Electrical Insulation

Alumina ceramic provides excellent dielectric properties and electrical insulation, making it suitable for components positioned close to electrodes, electrical conductors, heaters, sensors and high-voltage assemblies.

It is commonly considered for:

· Electrical isolators

· Insulation rings

· Ceramic spacers

· Feedthrough components

· Sensor components

· Semiconductor equipment insulation parts

 

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2. High Hardness and Wear Resistance

Dense alumina ceramic has much higher hardness than conventional metals and engineering plastics.

This allows ceramic components to maintain their dimensions and surface condition in applications involving:

· Mechanical contact

· Sliding

· Repeated positioning

· Particle abrasion

· Wafer handling

· Precision equipment movement

High wear resistance can also help increase component service life and reduce replacement frequency.

 

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3. High-Temperature Stability

High-purity alumina maintains good structural stability at temperatures far beyond the operating limits of most engineering plastics and many conventional materials.

It can therefore be considered for:

· Furnace equipment

· Heating systems

· High-temperature fixtures

· Process chambers

· Thermal insulation structures

· Semiconductor thermal processing equipment

Actual allowable operating temperature depends on mechanical load, atmosphere, thermal cycling and component design.

 

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4. Chemical and Corrosion Resistance

Alumina ceramic offers good chemical stability against many corrosive process environments.

This property is useful for ceramic parts used in:

· Semiconductor processing equipment

· Chemical processing systems

· Vacuum equipment

· Laboratory instruments

· Cleaning equipment

· High-purity process environments

 

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Alumina Ceramic Parts for Semiconductor Equipment

High-purity alumina is widely used in semiconductor processing equipment because it combines electrical insulation, high hardness, thermal stability and relatively low contamination.

Typical components include:

· Chamber ceramic components

· Electrical insulation rings

· Ceramic support parts

· Wafer handling components

· Ceramic positioning pins

· Vacuum equipment components

· Heater insulation parts

· Ceramic spacers and bushings

· Equipment fixtures

· Precision ceramic structural components

For semiconductor applications, ceramic purity, surface condition, dimensional tolerance and cleaning requirements should be specified according to the actual process environment.

 

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Precision Customization

For customized parts, the following information helps us evaluate manufacturing feasibility:

Material

Please specify the required alumina purity, such as:

· 95% Al₂O₃

· 96% Al₂O₃

· 99% Al₂O₃

· 99.5% Al₂O₃

· 99.9% Al₂O₃

Dimensions

Please provide:

· Outer diameter

· Inner diameter

· Length

· Thickness

· Hole diameter

· Groove dimensions

· Critical dimensions

Tolerance

Please mark critical dimensional tolerances directly on the engineering drawing.

Surface Requirements

If required, please specify:

· Surface roughness

· Grinding

· Polishing

· Lapping

· Flatness

· Parallelism

Quantity

Please provide estimated quantities for:

· Prototype

· Small batch

· Production batch

This information allows us to select a more suitable manufacturing route and provide a more accurate quotation.

 

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Applications

Custom alumina ceramic parts can be used in:

Semiconductor Equipment

Electrical insulation parts, chamber components, wafer handling components, equipment fixtures and precision ceramic structures.

Vacuum Equipment

Ceramic insulation, structural parts, spacers and components requiring low contamination and high dimensional stability.

Electronic Equipment

Insulators, housings, supports, sensor components and electrically insulating structures.

High-Temperature Equipment

Furnace components, heater supports, thermal processing fixtures and high-temperature insulation parts.

Precision Industrial Equipment

Wear-resistant positioning components, bushings, sleeves, guides and precision mechanical ceramic parts.

 

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Quality Control

Critical ceramic components can be inspected according to customer drawings and specification requirements.

Inspection items may include:

· Material verification

· Dimensional inspection

· Appearance inspection

· Hole diameter

· Thickness

· Flatness

· Parallelism

· Surface condition

· Critical dimensional tolerance

Inspection requirements should be defined before production, especially for semiconductor and precision equipment applications.

 

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How to Request a Quotation

Because most alumina ceramic parts are customized, a drawing is strongly recommended before quotation.

Please provide:

1. Alumina purity

2. Drawing or dimensions

3. Critical tolerances

4. Surface finish requirements

5. Application

6. Operating temperature

7. Required quantity

8. Delivery country

Accepted drawing formats may include PDF, DWG, DXF and STEP.

Providing complete technical information helps us evaluate manufacturability and quote more accurately.

 

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FAQ

Q1: Can you manufacture alumina ceramic parts according to our drawings?

Yes. Customized alumina ceramic components can be evaluated according to customer drawings, dimensions, tolerances, surface requirements and application conditions.

Q2: What alumina purity can you provide?

Different alumina grades can be evaluated according to the application. For semiconductor, electrical insulation and high-purity applications, 99.5% and 99.9% alumina are commonly considered.

Q3: What information is required for quotation?

Please provide the drawing, alumina purity, dimensions, tolerances, surface requirements, quantity and application. For precision ceramic components, a PDF, DWG, DXF or STEP drawing is preferred.