Multi-bore Alumina (Al2O3) Ceramic Tube

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Multi-bore Alumina (Al2O3) Ceramic Tube is made of high-purity alumina material and processed through high-temperature sintering, offering high hardness, mechanical strength, temperature stability, thermal conductivity, insulation, and corrosion resistance. Heeger Materials provides top-quality Multi-bore Al2O3 Ceramic tubes at competitive prices, offering specialized and customized services.

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Data sheet

MaterialsAl2O3
Purity95%, 97%, 99%, 99.7%, or customized
Sizecustomized

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Multi-bore Alumina (Al2O3) Ceramic Tube is composed of ceramic material that exhibits high thermal conductivity, compressive strength, and thermal shock resistance. Additionally, alumina ceramic possesses a low coefficient of thermal expansion, which makes it an ideal material for various furnace applications in the form of crucibles, tubes, and thermocouple sheaths.

Multi-bore Alumina (Al2O3) Ceramic Tube

Multi-bore Alumina (Al2O3) Ceramic Tube Properties

Composition

UNIT

HM-Al95

HM-Al99

HM-Al997

AL2O3  Content

%

95

99

99.7

Color

 

White

Ivory

Ivory

Tensile Strength

Kpsi

32

38

36

Flexural Strength

Kpsi

52

55

54

Compressive Strength

Kpsi

300

377

350

Density

g/cc

3.70

3.90

3.92

Hardness

HV, GPa

13.8

17.2

18

Thermal Conductivity

W/(m K)

25

30

30

Coefficient of Thermal Expansion

In / In°C (x10-6)

7.7

7.8

7.8

Working Temperature

°C

1500

1650

1750

Dielectric Constant

 

9.5

9.7

9.8

Volume Resistivity (25°C)

Ohm-cm

>1014

>1014

>1014

*Customized services can be available according to specific drawings.

Multi-bore Alumina (Al2O3) Ceramic Tube Advantages

  • High-temperature resistance
  • Good gear resistance 
  • Good corrosion resistance
  • High hardness
  • Low thermal expansion
  • Low friction coefficient

Multi-bore Alumina (Al2O3) Ceramic Tube Applications

  • Used as crucibles, thermocouple protection tubes, and furnace components in high-temperature processes such as heat treatment, sintering, and annealing.
  • Used in semiconductor manufacturing processes, such as chemical vapor deposition (CVD) and atomic layer deposition (ALD), where precise control of temperature and chemical compatibility is crucial.
  • Used in analytical instruments, such as gas chromatography and mass spectrometry systems, as capillary columns for separation and analysis of gases and liquids. 
  • Used in metallurgical processes, including metal casting, foundries, and metal extraction. 
  • Used as catalyst supports, porous membranes, and tubes for chemical reactors.

Multi-bore Alumina (Al2O3) Ceramic Tube Packing

Muti-bore Alumina (Al2O3) Ceramic Tube is carefully packaged with adhesive-free surface protection tape and cardboard boxes to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

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