Brand Name: | ZMSH |
MOQ: | 1 |
Price: | by case |
Packaging Details: | custom cartons |
Payment Terms: | T/T |
A sapphire tube is a high-performance tubular material made from synthetic sapphire (Al₂O₃), offering exceptional hardness, high-temperature resistance, chemical stability, and optical transparency. Due to these remarkable properties, sapphire tubes are widely used in various high-tech and industrial fields, particularly in industries that require materials capable of withstanding extreme environments. The unique advantages of sapphire tubes make them an ideal choice in applications where traditional materials fall short.
Exceptional Hardness: Sapphire has a Mohs hardness of 9, second only to diamond, providing sapphire tubes with excellent wear resistance. Even in extremely harsh working environments, sapphire tubes maintain superior performance.
High-Temperature Resistance: Sapphire tubes can withstand temperatures up to 2000°C, maintaining their physical and chemical properties in high-temperature environments, making them ideal for applications in industries that deal with extreme heat.
Chemical Stability: Sapphire is highly resistant to most acids, alkalis, and corrosive substances, ensuring that sapphire tubes can perform reliably in corrosive chemical environments without degradation.
Optical Transparency: Sapphire tubes have excellent transparency, particularly in the visible and ultraviolet light ranges, ensuring good light transmission. This property makes them suitable for optical transmission and laser applications.
High Electrical Insulation: Sapphire tubes offer good electrical insulation, making them ideal for use in applications requiring electrical isolation and protection.
Material Property |
Value/Description |
---|---|
Chemical Formula | Al₂O₃ (aluminum oxide) |
Hardness | 9 Moh's |
Class | Hexagonal-scalenohedral |
Melting Point | 2053°C (3727°F) |
Maximum Useful Temperature | 2000°C |
Surface Quality | 80/50, 60/40, 40/20, 20/10 (Scratch/Dig) |
Axis Orientation | C-Axis (C-Plane), M-Plane, A-Plane, R-Plane and Random |
Young's Modulus | 435 GPa |
Tensile Strength | 275 MPa to 400 MPa |
Flexural Strength | 480 MPa to 895 MPa |
Modulus of Rigidity | 175 GPa |
Density | 3.97 g/cm³ |
Transmission Range | 190nm to 5 microns |
Poisson's Ratio | 0.27 - 0.30 |
Abbe Number (νd) | 72.24 |
Dimension Tolerance | ± 0.01-0.10mm |
Thickness Tolerance | ± 0.1mm |
Sapphire tubes play a crucial role in the semiconductor industry, particularly in the production of blue LED, laser diodes, and other optoelectronic components. Their primary applications include:
Crystal Growth Protection: In semiconductor manufacturing, sapphire is often used as a substrate material for crystal growth. Sapphire tubes are employed as protective components to ensure the safe operation of equipment in high-temperature and high-pressure environments.
Packaging Material: Due to their transparency and heat resistance, sapphire tubes are ideal for packaging LED and other optoelectronic devices, protecting the sensitive components inside while allowing light to pass through.
Due to their optical transparency and high-temperature resistance, sapphire tubes are widely used in optical devices, lasers, and sensors:
Laser Protection Shells: Sapphire tubes are used for protective outer casings of lasers. They effectively shield the laser from external damage while withstanding the high temperatures generated by the laser during operation.
Optical Windows: In applications that require high light transmission and temperature resistance, sapphire tubes serve as optical windows, allowing light to pass through without damage to the material.
Sapphire tubes excel in high-temperature environments, making them suitable for a variety of extreme heat applications:
High-Temperature Reactors: Sapphire tubes are used as key components in high-temperature chemical reactors, providing protection against heat and chemical reactions while ensuring the integrity of the equipment.
High-Temperature Fluid Transport: In fluid transport systems exposed to high temperatures, sapphire tubes can maintain their performance, resisting deformation or corrosion, thus ensuring the stability of fluid flow.
Sapphire tubes are also highly valuable in the medical industry due to their chemical stability, high-temperature resistance, and transparency. Their applications include:
Endoscope Protection Tubes: Sapphire tubes are widely used in the outer casing of medical endoscopes. They provide mechanical protection while allowing light to pass through, ensuring clear visibility during medical procedures.
Laser Surgery Equipment: Sapphire tubes, due to their excellent heat resistance and transparency, are used in laser surgery equipment to ensure efficient light transmission and safe operation of the system.
Sapphire tubes are critical in the aerospace sector, where they are used in extreme environmental conditions, particularly in:
Thermal Protection Systems: Sapphire tubes are used in spacecraft thermal protection systems, effectively isolating the spacecraft from the intense heat generated during high-speed flight, protecting sensitive components from thermal damage.
Optical Sensor Protection: Sapphire tubes are employed to protect optical sensors on spacecraft, ensuring that the sensors remain undamaged and continue to operate efficiently in harsh space environments.
In the energy and chemical sectors, sapphire tubes are used in high-pressure, high-temperature, and corrosive environments. Their applications include:
Chemical Reactor Piping: Sapphire tubes are used in chemical industries to transport highly corrosive fluids, including strong acids and alkalis, ensuring the integrity of the system without risk of material degradation.
High-Temperature Gas Transport: Sapphire tubes are ideal for high-temperature gas transport systems in industries like petrochemicals and metallurgy, where other materials might fail due to thermal stress or corrosion.
Q1: What’s the difference between EFG and Ky sapphire tubes?
EFG tubes are grown directly into tubular shapes, offering cost efficiency and long lengths. Ky tubes are machined from boules, offering better crystal consistency and are preferred for precision-demanding applications.
Q2: Can I choose the growth method based on my application?
Yes. If your priority is long, uniform tubes for structural or industrial use, EFG is often more suitable. If high optical quality and lower stress are critical, Ky method may be preferred.
Q3: Are the tubes customizable?
Absolutely. We support custom orders in size, wall thickness, length, crystal orientation, and surface polish.