• f
  • t
  • g
  • y
  • in
Technical Ceramics

LOADING IMAGES

Al2O3 Aluminum Oxide Alumina Ceramic Tube

Alumina(Aluminum Oxide Ceramic) is the most commonly used technical ceramic material. Thanks to its very good electrical insulation, dielectric strength and high temperature resistance up to 1,700 °C, Alumina Ceramic is ideal for electrical applications and high-temperature applications.
  • Density :

    3.65 - 3.90 g/cm3
  • Max. Service Temp. :

    1,400 - 1,800 degree C
  • Thermal Conductivity :

    20 - 30 W/m.K
  • Dielectric Strength :

    15 - 20 KV/mm
Inquiry now
Product Detail



▼ Material Description of Alumina Tubes

Alumina ceramic tube is made of Aluminum Oxide(Al2O3), which is a white or ivory white ceramic that has been applied to electrical components from an early stage by taking advantage of its good electrical insulation properties, besides, ceramic tubes made of high alumina have also high resistance to temperature, heat, wear and corrosion, and alumina ceramic is the cheapest material among the fine technical ceramics. UNIPRETEC offers high alumina tube with a purity range from 90% to 99.8%. It is also possible to manufacture large nonporous alumina ceramic tubing, and the high purity type has high mechanical strength and excellent corrosion resistance.


 √ High Hardness
  Low Coefficient of Thermal Expansion
  Excellent Electrical Insulator
  Mechanically Stable at High Temperature
  Good Thermal Shock Resistance
  High density, non-porous and vacuum tight
  Resists Abrasive Wear and Chemical Attack
  ......


▼ Material Properties of Alumina Tube

 ITEM
 UNIT
 ALUMINA | A950
 ALUMINA | A990
 Main Content
 -  95% Al2O3
 99% Al2O3
 Color
 -  White
 White & Ivory
 Density
 g/cm3
 > 3.65  > 3.85
 Vickers Hardness
 Gpa
 14  17
 Flexural Strength
 Mpa
 310  360
 Compressive Strength
 Mpa
 2,200  2,500
 Electrical Resistivity
 Ω·cm
 >1014
 >1014
 Dielectric Strength
 KV/mm
 15  17
 Dielectric Constant
 1 MHz
 8  9
 Thermal Conductivity
 W/m.K          
 25  29
 Max. Working Temperature
 °C / °F
 1,500 / 2,730
 1,650 / 3,000
 Resistance to Thermal Shock
 △T(°C)
 210
 230
 Thermal Expansion Coefficient (25 - 1,000 °C)
 10-6/K
 7 - 9
 7 - 9

∆ The data is offered for reference only, exact data will vary depending on producing method & part configuration.


▼ Typical Applications of Aluminum Oxide Tubes


- Noble metal thermocouple protection, furnace tubes, high temperature vacuum furnaces, heat treating furnace rollers, radiant tubes, laser tubes, corona treater tubes and ozone generators.

- Corrosive environments and electrical insulation applications. Noble metal thermocouples and diffusion furnace profile couples, laser wave guides and RTD's.

- Solutions for the pharmaceutical, food and cosmetic industries with a focus on filling, dosing and control applications.


Heating Tube for Tube Furnace

Tube for Corona Treatment

Electrical Insulator Tube

Wear Liner Tube for Pumps

Thermocouple Protection Tubes

Tube for Ozone Generator

Request a free quote

If you have questions or suggestions, please leave us a message,we will reply you as soon as we can!

Hot Products
  • ceramic cylinder liner

    Ceramic Cylinder Liners For Reciprocating Pumps

    Due to the ceramic's resistance to pressure, heat, abrasion, and corrosion., UNIPRETEC uses ceramics instead of SUS to make cylinder liners for reciprocating pumps. We are specialized in making ceramic cylinder liners that meet customers' needs in terms of roundness, straightness, surface roughness, etc., and improving work efficiency, product lifetime, and precision.

  • zirconia washers

    Zro2 Zirconia Gap Sub Washers

    Zirconium dioxide, also known as zirconia and zirconium oxide, is a crystalline metal oxide that has found its way into the technical advanced ceramics industry. It is characterised by its high thermal resistivity, mechanical resistance, and abrasive properties.

  • Waterjet Cutting Intensifier Ceramic Plunger

    Zirconia Ceramic Plungers for Waterjet Intensifier

    Due to the ceramic's resistance to chemicals, heat, abrasion, and its low thermal expansion, etc., UNIPRETEC uses zirconia ceramic instead of SUS to make the plungers (pistons) for high pressure waterjet pump intensifier parts. We are specialized in making ceramic plungers that meet customers' needs in terms of roundness, straightness, surface roughness, etc., and improving work efficiency, product lifetime, and precision.

  • ceramic plunger

    Ceramic Plungers for Pump

    Due to the ceramic's resistance to chemicals, heat, abrasion, and its low thermal expansion, etc., UNIPRETEC uses ceramics instead of SUS to make plungers (pistons) for high pressure plunger pumps, automatic filling machines, medical controlled volume pumps, syringe pumps, etc. We are specialized in making ceramic plungers that meet customers' needs in terms of roundness, straightness, surface roughness, etc., and improving work efficiency, product lifetime, and precision.

  • zirconia frac plug button

    ZrO2 Zirconia Ceramic Frac Plug Buttons

    Zirconium dioxide, also known as zirconia and zirconium oxide, is a crystalline metal oxide that has found its way into the technical advanced ceramics industry. It is characterised by its high thermal resistivity, mechanical resistance, and abrasive properties.

  • Alumina Ceramics

    Alumina Ceramic Piston for High Pressure Washer Pump

    The ceramic pistons are made using the advanced aluminum oxide ceramic material that possesses high hardness, wear resistance, high temperature resistance, and corrosion resistance, ensuring consistent material performance.

Related products
Alumina Ceramic Tube
Alumina Ceramic Protection Tubes for Thermocouples
Aluminum oxide is the most commonly used technical ceramic material. Thanks to its very good electrical insulation, dielectric strength and high temperature resistance up to 1750 ° C, Alumina Ceramic is ideal for electrical applications and high-temperature applications.
Alumina Ceramic Plate
Alumina Oxide Ceramic Substrates for Thick-Film Electronics
Aluminum oxide is the most commonly used technical ceramic material. Thanks to its very good electrical insulation, dielectric strength and high temperature resistance up to 1500 °C, Alumina Ceramic is ideal for electrical applications and high-temperature applications.
Alumina Ceramics
Al2O3 Aluminum Oxide Alumina Ceramics
Alumina(Al2O3) is the most widely used advanced ceramic, Alumina Ceramic is electrical insulated, wear & corrosion resistant, high temperature resistant... Aluminum Oxide is an excellent material choice for various industries.
Alumina Ceramic Ring
Al2O3 Aluminum Oxide Alumina Ceramic Ring
Alumina(Al2O3) is the most widely used advanced ceramic, Alumina Ceramic Ring is electrical insulated, wear & corrosion resistant, high temperature resistant... Aluminum Oxide is an excellent material choice for various industries.
Alumina Ceramic Disc
Al2O3 Aluminum Oxide Alumina Ceramic Disc
Alumina(Al2O3) is the most widely used advanced ceramic, Alumina Ceramic Disc is electrical insulated, wear & corrosion resistant, high temperature resistant... Aluminum Oxide is an excellent material choice for various industries.
Alumina Ceramic Plate
Al2O3 Aluminum Oxide Alumina Ceramic Plate
Alumina(Al2O3) is the most widely used advanced ceramic, Alumina Ceramic Plate is electrical insulated, wear & corrosion resistant, high temperature resistant... Aluminum Oxide is an excellent material choice for various industries.
alumina ceramic washer
Al2O3 Aluminum Oxide Alumina Ceramic Washer
Alumina(Al2O3) is the most widely used advanced ceramic, Alumina Ceramic Tube is electrical insulated, wear & corrosion resistant, high temperature resistant... Aluminum Oxide is an excellent material choice for various industries.
Alumina Ceramic Tube
Alumina Ceramic Protection Tubes and Insulator Rods for Thermocouples
Aluminum oxide is the most commonly used technical ceramic material. Thanks to its very good electrical insulation, dielectric strength and high temperature resistance up to 1700 °C, Alumina Ceramic is ideal for electrical applications and high-temperature applications.
our Partners
Customer ERAMET
Customer INDO-MIM
CORNING
Customer HealthCap
Partner Magna
Partner Knowles Electronics
Customer CTS
MARTOR
PARTNER FUZHOU UNIVERSITY
PARTNER TSINGHUA UNIVERSITY
chat now
If you have questions or suggestions, please leave us a message,we will reply you as soon as we can!
   

Online Service