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AC0917 Alumina Rod, Aluminum Oxide Rod, Al2O3

  • Catalog No. AC0917
  • Size Diameter 1~100mm
  • Material Al2O3
  • Purity 99%, 99.7%
  • Density 3.8~3.9 g/cm3

Alumina Rod Description

Alumina Rod, made of high-purity aluminum oxide (Al2O3) ceramic, is a fine ceramic material widely used in various industries. Alumina rods exhibit superb performance in electrical insulation, high chemical resistance, and low thermal expansion, making them essential in many high-demand applications.

High-purity alumina products are excellent 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.

Alumina Rod 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 demonstrates the typical properties of common alumina materials used to produce our alumina ceramic parts. Please note that the properties of customized alumina parts may vary due to different processes. Advanced Ceramic Materials (ACM) can produce aluminum oxide rods according to your specified instructions or do our best to meet your requirements.

Alumina Rod Advantages

  • High-Temperature Resistance: Withstands high temperatures, maintaining integrity and performance.
  • Wear & Corrosion Resistance: Excellent durability against wear and corrosive environments.
  • High Hardness: Ensures robustness in demanding applications.
  • Low Thermal Expansion: Reduces risk of thermal shock and deformation.
  • Low Friction Coefficient: Provides smooth, efficient performance in mechanical applications.

Alumina Rod Applications

Alumina ceramic rods have a wide variety of applications:

  • Semiconductor Industry: Used for making parts for CVD, ion implants, photolithography, and semiconductor parts.
  • Traditional Industries: Ideal for products such as injector tubes, gas nozzles, and insulators.
  • Industrial Furnaces: Maintains hardness and structural integrity at high temperatures.
  • Thermocouple Protection: Acts as a protector for high-temperature thermocouples.
  • Chemical Industry: High corrosion resistance makes it suitable for chemical processing equipment.


Our alumina rods are 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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