Sapphire optical glass tube 99.999% Al2O3 high hardness 9.0 polished customized size

A ​​sapphire tube​​ is a transparent tubular material manufactured from high-purity monocrystalline sapphire (Al₂O₃) through precision processing. It combines exceptional optical, mechanical, and chemical performance. Its core features include ​​ultra-high hardness (Mohs hardness of 9)​​, ​​extreme thermal resistance (operational stability up to 2000°C)​​, ​​corrosion resistance (stable in strong acids and alkalis)​​, and ​​broad-spectrum transparency (0.15–5.5 μm wavelength range)​​. Sapphire tubes are widely utilized in advanced industries such as semiconductors, chemical engineering, optical instruments, and medical devices

Key Features of Sapphire tubes

1. ​​High Transparency and Optical Performance​​
Sapphire tubes exhibit excellent light transmittance (0.15–5.5 μm) with minimal optical loss (<0.1–0.3 dB/cm), making them ideal for laser transmission, optical windows, and fiber optic connectors.

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2. Extreme Environmental Durability​​

· ​​Thermal Resistance​​: Sustained operational temperatures up to 1600–2000°C, with short-term tolerance up to 2050°C.

· ​​Chemical Resistance​​: Superior to quartz in resisting acids, alkalis, fluorine, and plasma.

· ​​Mechanical Strength​​: Compressive strength 4x higher than quartz, suitable for high-pressure reactors and precision instruments.

​​3. Dimensional Customization and Precision​​

​​· Customizable Sizes​​: Outer diameter (3–300 mm), inner diameter (0.8–25 mm), and length (up to 250 mm).

· ​​Precision Machining​​: Utilizes CNC milling, diamond tools, and Edge-Defined Film-Fed Growth (EFG) methods to achieve concentricity errors <0.02 mm and surface roughness ≤Rz0.1.

Primary applications of Sapphire tubes

1. ​​Semiconductor and Electronics​​
Used in crystal growth furnaces, LED substrates, and high-voltage devices, replacing quartz to eliminate contamination and ensure production purity.

​​2. Energy and Chemical Engineering​​

· ​​Petrochemical​​: Heavy oil reactors, high-temperature burners, and acid-resistant equipment.

· ​​Hydrogen Energy​​: High-pressure hydrogen production conduits.

​​3. Optics and Medical Systems​​

​​· Laser Systems​​: UV lamp windows, laser transmission optics, and fiber couplers.

​​· Medical Devices​​: Endoscopes and laser surgical tools, leveraging biocompatibility and thermal stability.

​​4. Aerospace and Defense​​
Engine temperature monitoring systems, missile guidance components, and high-temperature pressure sensors.

Related products

Sapphire tubes, with their ​​unmatched physical and chemical properties​​, serve as critical materials in high-end industrial and technological sectors. Leveraging ​​precision machining technology​​ and ​​customized services​​, ZMSH provides high-transparency, extreme-environment-resistant sapphire tubes. We are committed to advancing industries such as semiconductors, energy, and optics. As technology evolves and application scenarios expand, sapphire tubes will continue to play a strategic role in next-generation innovations.

Sapphire rods small size: