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AC0915 Alumina Tube, Aluminum Oxide Tube, Al2O3

  • Catalog No. AC0915
  • Size Diameter 1~100 mm
  • Material Al2O3
  • Purity 99%, 99.8%
  • Density 3.8~3.9 g/cm3

Alumina Tube Description

Alumina tube is made of aluminum oxide (Al2O3) ceramic. Alumina as a fine ceramic material is widely used in a lot of industries. Aluminum oxide tubes have superb performances in electrical insulation, high chemical resistance, and low thermal expansion and these ceramic tubes are widely used in industrial ovens and machines. High-purity alumina materials are excellent for making alumina components for CVD, ion implants, photolithography, and semiconductor manufacturing.

In traditional industries, alumina ceramic tubes are ideal for products such as injector tubes and insulators. Alumina tube is also widely used as protector for high-temperature thermal couples.

Alumina Tube Specifications 

Composition AL97 AL98
AL2O3 Content 97% 99.80%
Color White Ivory
Tensile 30 Kpsi 32 Kpsi
Flexural 55 Kpsi 60 Kpsi
Compressive 300 Kpsi 330 Kpsi
Density 3.7 g/cc 3.92 g/cc
Hardness 13.8 HV, Gpa 18 HV, Gpa
Thermal Conductivity 25 W/(m K) 32 W/(m K)
C.O.T.E. 77 In / In°C (x10^7) 78 In / In°C (x10^7)
Working Temperature 1500 °C 1750 °C
Dielectric Constant 9.5 9.8
Volume Resistivity >10^14 Ohm-cm >10^15 Ohm-cm
Dielectric Strength 16 KV/mm 20 KV/mm


*This chart just demonstrates the typical properties of common alumina materials we use to produce our alumina parts. Please notice that the property of customized aluminum oxide parts could vary due to different processes. Advanced Ceramic Materials (ACM) could provide alumina ceramic tubes produced under your specified instruction, or do the best to meet customers’ requirements. Custom sizes are available.

Alumina Tube Applications

Aluminum oxide ceramic tubes have a wide range of applications:
 Used for making parts for CVD, ion implants, photolithography, and semiconductor parts.
 In traditional industries, alumina ceramics are ideal for products such as injector tubes, gas nozzles, and insulators.
 Used as a material for industrial furnaces due to its ability to maintain its hardness at high temperatures.
 Used as a protector for high-temperature thermal couples.
 Used as a material for the chemical industry due to its high corrosion resistance.


Our alumina tube is carefully handled to prevent damage during storage and transportation and to preserve the quality of our product in its original condition.

Related Documents
Alumina Ceramic Materials Brochure
Technical brochure for Alumina Ceramic Materials, all grades. Revision March 2023.
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