High Purity 99% Al2O3 Furnace Pipe High-temperature Alumina Oxide Ceramics Tube

High Purity 99% Al2O3 Furnace Pipe High-temperature Alumina Ceramics Tube

Alumina Tube (Al₂O₃) is a high-purity engineering ceramic tube combining the extreme hardness, chemical inertness, full electrical insulation, and dimensional stability of alumina at temperatures up to 1700°C in a hollow cylindrical form. The 99.7% purity grade offers marginally higher purity than the standard 99% rod and tube grades, supporting use in applications where trace elemental contamination must be minimised. Zero apparent porosity and zero water absorption ensure no moisture ingress and consistent performance in oxidizing, reducing, and chemically aggressive atmospheres.

In industry, alumina tube is used as thermocouple protection sheaths for temperature measurement to 1700°C in oxidizing and reducing atmospheres, as high-voltage insulator tubes in vacuum and high-temperature electrical assemblies, as process tubing in analytical instruments where chemical inertness is required, and as liner tubes in abrasive material conveying systems. In research, alumina tubes are used as reactor tubes in high-temperature tube furnaces, as insulating sleeves in high-temperature electrochemistry and impedance spectroscopy, and for gas flow management in experimental atmosphere-controlled processing rigs.

The alumina parts exhibit remarkable resistance to high temperatures, ensuring optimal performance even in the most demanding environments. 

Alumina ceramic shaped parts are industrial ceramic components made primarily from aluminum oxide (Al₂O₃) and formed into custom, complex, or irregular geometries. Unlike standard ceramic plates or rods, these parts are engineered to match specific applications, tolerances, and performance requirements.

Made of high‑purity aluminium oxide (Al₂O₃), alumina ceramic tube is a widely‑used advanced industrial ceramic component. It features excellent high‑temperature resistance for continuous operation up to 1650°C, superior electrical insulation, high hardness and outstanding chemical corrosion resistance against most acids and alkalis. With low porosity and good thermal‑shock stability, it maintains structural integrity under frequent temperature cycling.

Custom dimensions including outer diameter, inner diameter and length are available. Widely applied for thermocouple protection sleeves, furnace liners, high‑voltage insulators, and wear‑resistant parts in electronics, metallurgy and chemical industries.

Alumina Oxide (Al2O3) Properties:

High strength over a large temperature range
High fracture toughness
Good flexural strength
High hardness and wear resistance  
Low thermal expansion
Electrical insulator
Good oxidation resistance
Good chemical corrosion resistance
Wear resistant High stiffness

Typical Applications Include: 

Wear resistant components,

High pressure nozzles,

Thermocouple tubes,  

Electrical Insulators,

Corrosive labware,

Furnace fixtures,

Ballistic armor,

Thread guides,

Laser Tubes, 

Pump seals.