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AC0920 Multi-bore Alumina Tubes (Porous Ceramic Tubes)

Catalog No. AC0920
Size Diameter 1~100 mm
Material Al2O3
Purity 99%, 99.7%
Density 3.8~3.9 g/cm3


Multi-bore Alumina Tube Description

alumina tubeMulti-bore alumina tube is made of a ceramic material with high thermal conductivity, compressive strength, and thermal shock resistance. Alumina ceramic also has a low thermal expansion, making it a suitable material for furnace use in the crucible, tube, and thermocouple sheath form. Alumina is high hardness and good wear resistance, making it a suitable material for ball valves, piston pumps, and deep drawing tools. In addition, it can be easily combined with metals and other ceramic materials using brazing techniques and metalizing. 

Multi-bore 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 multi-bore aluminum oxide tube. Please notice that the property for customized alumina parts could vary due to different process. Advanced Ceramic Materials (ACM) could provide alumina ceramic products produced under your specified instruction, or do the best to meet customers’ requirements.

Multi-bore Alumina Tube Applications

Multi-bore alumina tube has a wide rage of applications:

• Air, gas and liquid filtration
• 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.
• Alumina tubes are widely used as a protector for high-temperature thermal couples.
• Used as the protector for high-temperature thermal couples.
• Used as a material for the chemical industry due to its high corrosion resistance.


Our multi-bore alumina tubes are carefully handled to prevent damage during storage and transportation and to preserve the quality of our products in their original condition.


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Multi-bore Alumina Tubes (Porous Ceramic Tubes)
Average rating:  
 1 reviews
by Tony Dylan on Multi-bore Alumina Tubes (Porous Ceramic Tubes)
Good Quality for the Money

Good quality and high-rate of cut. I have bought 30 of these so far and I will be back for more.