Precision Ground Alumina Ceramic Tubes for High Temperature Applications

Product Overview

Our precision-ground alumina (Al₂O₃) ceramic tubes are engineered for extreme temperature stability, wear resistance, and electrical insulation in demanding industrial applications. Custom dimensions and tolerances available for OEM integration.

Key Technical Specifications

✅ Material: 99.5% Alumina (Al₂O₃) - <50ppm metallic impurities

✅ Density: 3.9 g/cm³ - Gas-tight structure

✅ Flexural Strength: 350-400 MPa

✅ Hardness: 1,500 HV (Mohs 9) - 3× harder than tool steel

✅ Max Operating Temp: 1,600°C (2,912°F) continuous

✅ Thermal Shock Resistance: ΔT >500°C (Water quenching test)

✅ Surface Finish:

Ground: Ra 0.4µm (±0.02µm consistency)

Polished: Ra <0.1µm (optional)

✅ Standard Dimensions:

OD: 2-100mm (±0.02mm tolerance)

ID: 1-90mm

Length: 10-500mm (custom up to 1,200mm)

Industry Applications

1. Semiconductor Manufacturing

Plasma etch chamber components - Non-contaminating, RF-transparent

Wafer handling sleeves - ESD protection for 300mm wafers

2. High-Temperature Furnaces

Thermocouple protection tubes - Withstand 1,500°C molten metal

Kiln furniture support rods - Zero deformation at 1,400°C

3. Chemical Processing

Acid-resistant liners - For 20% HCl transfer systems

Reactor thermowells - 10× lifespan vs. Hastelloy

4. Energy Systems

SOFC stack components - Ionic insulation layers

Solar cell manufacturing - High-purity alumina containment

5. Medical Technology

Sterilizable surgical guides - ISO 6474 compliant

MRI-compatible components - Non-magnetic properties

Technical Parameters

Production process

Certifications

Our advantage

● Certificates: ISO & SGS

● OEM & ODM: OEM & ODM service is available

● Strict testing procedures :Meeting the requirements of the product design and process, providing reliable testing data.

● Short Delivery time:If less than 1000 pieces, it only takes around 5 days. We also stock some standard-sized products, if you need urgently, we can delivery very soon.

● Best ex-factory price

● Worldwide customers

● Customized according to needs

● Continuous research and development of new products

● Customer service:If you find some quality problem, please contact us, we’ll deal with it as soon as possible.

Packaging and shipping

Our customers have a wide range of processing choices for transportation mode.

Our Main Products

Company Profie

   Yixing Shengda Refractory Ceramic Co., Ltd, established in 1995, Yixing, China with an area of 4,000 square meters and fixed assets of over 1 million US dollars, is a professional manufacturer of Steatite Ceramic Parts, Alumina Ceramic Parts, Cordierite Ceramic Parts, Ceramic Band Heater Insulators, Ceramic Terminal Block, Thermostat Ceramic Parts, Zirconia Ceramics Parts, Ceramic Heater Plugs, etc. 

    Shengda Ceramic equipped with CAD/CAXA/Solidworks software to provide professional OEM & ODM service.

    Looking forward to co-operating with the customers from all over the world!

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