AC8705 Alumina Tube, Aluminium Oxide Tube (Al2O3 Tube) 99%, OD. 20 mm

Alumina Tube, Aluminium Oxide Tube (Al2O3 Tube) 99%, OD. 20 mm Description

The high-purity 99% Alumina Tube with a 20 mm outer diameter demonstrates advanced ceramics engineering, providing outstanding thermal, chemical, and mechanical performance in demanding environments. Fabricated from a specialised aluminium oxide (Al2O3) formulation, each tube is highly resistant to corrosion, wear, and thermal shocks, making it suitable for a wide range of applications, including catalyst supports, laboratory equipment, instrument housings, and furnace systems.

Manufactured under rigorous quality controls, these alumina tubes demonstrate consistent dimensional accuracy and structural stability at elevated temperatures up to 1 700°C. Their low thermal expansion and excellent electrical insulation properties ensure reliable performance in both research and industrial settings. By meeting strict industry standards, including ISO certifications, these tubes guarantee enhanced reliability and an extended service life, making them an asset to any high-temperature or corrosive environment.

Alumina Tube, Aluminium Oxide Tube (Al2O3 Tube) 99%, OD. 20 mm Applications

Alumina tubes made from 99% aluminium oxide (Al2O3) with a 20 mm outer diameter offer outstanding mechanical strength, chemical stability, and thermal endurance. These properties make them indispensable in numerous industrial and commercial settings where reliable performance and durability are paramount. From advanced electronics to precise medical instruments, such tubes perform under challenging conditions including high temperatures and corrosive environments. Below are three primary categories of applications.

1. Electronics and Semiconductor Applications

·         Semiconductor Wafer Handling: These tubes provide protective insulation and support in wafer transfer and processing equipment.

·         Sensor Housings: Their high dielectric strength and chemical resistance make them ideal enclosures for measuring devices in sensitive circuits.

2. Chemical Processing and Petrochemical Applications

·         Acidic and Alkaline Fluid Transfer: The corrosion resistance of alumina tubes ensures safe and efficient transport of aggressive chemicals.

·         High-Temperature Reaction Chambers: Their ability to withstand extreme heat makes them suitable for processing reactions at elevated temperatures.

3. Medical and Healthcare Applications

·         Diagnostic Equipment Components: Alumina tubes offer stable, inert surfaces for sample containment in devices like blood analysers.

·         Surgical Instrument Handles: Their biocompatibility and durability allow for comfortable, long-lasting instruments in sterile environments.

Alumina Tube, Aluminium Oxide Tube (Al2O3 Tube) 99%, OD. 20 mm Packaging

Each 99% Alumina (Al2O3) Tube with 20 mm OD is carefully packaged using premium foam inserts to tightly cushion the tube and prevent movement during transit. Additional bubble wrap layers shield against scratches and reduce vibration. Rigid cardboard boxes reinforced with corner protectors minimise impact damage. Customisable outer packaging and labelling are available upon request to meet specific shipping or branding requirements. This ensures maximum protection and reliable delivery for your sensitive ceramic components.

Packaging: Foam packaging, Wooden Box, or Customised.

Alumina Tube, Aluminium Oxide Tube (Al2O3 Tube) 99%, OD. 20 mm FAQs

Q1: What are the key material properties of Alumina Tube, Aluminium Oxide Tube (Al2O3 Tube) 99%, OD. 20 mm?

A1: These tubes are made from 99% pure aluminium oxide, featuring outstanding hardness (Mohs scale around 9), high compressive strength, excellent chemical resistance, and an operating temperature up to 1 600°C in oxidising atmospheres. They also exhibit low thermal expansion (about 8.5 × 10⁻⁶ K⁻¹), good electrical insulation, and high thermal conductivity. This combination of properties makes them ideal for applications requiring dimensional stability, chemical inertness, and long service life.

Q2: How can this ceramic product be processed or fabricated?

A2: Alumina tubes can be shaped using various ceramic fabrication methods such as extruding, slip casting, or cold isostatic pressing before undergoing high-temperature sintering to achieve the final density and mechanical properties. Machining, including diamond grinding or laser cutting, can be applied to meet precise dimensional requirements. Protective atmospheres may be used during firing to optimise sintering, ensuring a strong microstructure and minimal thermal stress.

Q3: Which quality standards and certifications apply to Alumina Tube, Aluminium Oxide Tube (Al2O3 Tube) 99%, OD. 20 mm?

A3: For 99% alumina tubes, compliance with recognised international and industry standards is essential. Manufacturing often adheres to ISO 9001 for quality management, while material-related standards such as ASTM C786 or ASTM C799 may apply to advanced ceramic components. Many suppliers also comply with RoHS and REACH regulations to address hazardous substances and environmental concerns. Additionally, third-party inspections and certifications ensure product traceability, dimensional accuracy, and consistent mechanical performance.

Related Information

1. Manufacturing Process

A significant phase in creating a 99% Alumina Tube with an outer diameter of 20 mm is the careful selection and refining of high-purity aluminium oxide powder. The powder is typically shaped through specialised techniques such as extrusion or cold isostatic pressing, ensuring uniform compaction and minimal internal voids. Advanced sintering protocols then facilitate the densification of the tube, locking in the outstanding mechanical and thermal properties crucial for demanding applications.

Burring or uneven edges are addressed through meticulous finishing operations, which include precise grinding and lapping routines. Such fine-tuning delivers a smooth external surface, minimising stress concentrations and enhancing the tube’s suitability for applications that demand stable performance under high temperatures, corrosive environments, or stringent dimensional tolerances.

2. Applications in Advanced Industries

Research facilities rely on these Al2O3 tubes for tasks involving controlled reactions and precision measurements. Many laboratories employ 99% alumina tubes with a 20 mm OD because they can withstand corrosive chemicals without contaminating experiments or degrading over time, making them an ideal choice for critical analysers and test equipment.

Diverse industrial sectors, such as semiconductor manufacturing and aerospace engineering, also value these ceramic tubes for their impressive thermal conductivity and durability. Heat-treatment furnaces, plasma spray chambers, and specialised sensors incorporate these tubes to ensure consistent performance in extreme operating conditions, reflecting the high trust placed in their material design.