Custom 140mm Double-Side Polished Sapphire Tubes Optical Component Protection Tubes

Custom 140mm Double-Side Polished Sapphire Tubes Optical Component Protection Tubes

The "140mm double-side polished sapphire tube" refers to a tubular component approximately 140mm in length, manufactured from optical-grade sapphire (α-Al₂O₃ single crystal), with both its inner and outer walls polished.

Sapphire crystal is a critical material due to its high hardness (Mohs hardness 9, second only to diamond), excellent wear resistance, high-temperature stability (melting point ~2030-2050°C), good chemical inertness, and broad-band transmittance from UV to IR (approximately 200nm to 5500nm). "Double-side polishing" means both the inner and outer surfaces have undergone precision processing to achieve specific surface smoothness and roughness requirements, meeting the demands of high-end applications for low loss, high reliability, and precision.

Sapphire Tube Characteristic

Sapphire Tube Applications

Leveraging these properties, double-side polished sapphire tubes are used in various high-end fields:

• Semiconductor Industry: Sapphire Tube is used in high-temperature furnace tubes, viewports, wafer carriers (Boats), etc., requiring high purity, high-temperature resistance, and contamination prevention.
• Optical Instruments & Equipment: Sapphire Tube is serving as IR/UV windows, laser tubes, optical component protective tubes, spectroscopic analysis cells, etc., demanding high transmittance and low scattering loss.
• Industrial Equipment & Sensing: Applied in high-temperature/pressure viewports (e.g., chemical reactors, pumps), measurement tubes for precision flow meters, sensor protection sleeves, etc., requiring corrosion resistance, wear resistance, and stability.
• Research & Special Equipment: Sapphire Tube is utilized in optical windows for high-pressure research chambers, synchrotron radiation beamlines, special lighting devices, etc., requiring reliability under extreme conditions and providing stable optical pathways.

Sapphire Tube Parameters

The following table summarizes possible technical parameters based on common sapphire tube specifications and the 140mm dimension.

Note: Actual values may vary depending on the manufacturer, processing level, and customer requirements. The table provides estimated common ranges or typical values. Always refer to the supplier's specifications when ordering.

More samples of Sapphire Optical Tubes

 

*We accept customized one, please feel free to contact us about your requirements.

About us

ZMSH is a leading enterprise dedicated to the R&D, manufacturing, precision processing, and global distribution of high-quality semiconductor substrates and optical crystal materials.

Backed by a highly skilled team of engineers and decades of management expertise, we leverage state-of-the-art fabrication facilities and rigorous inspection systems to deliver exceptional custom and non-standard component solutions. Our core strength lies in transforming innovative concepts into high-performance products tailored to specific client requirements.

Committed to the values of innovation, excellence, and customer success, ZMSH aims to set new standards in the optoelectronic materials industry and become a world-class provider of advanced crystal and semiconductor solutions.

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Q1: What are the key advantages of 140mm double-side polished sapphire tubes?
A1: They offer exceptional optical clarity (200-5500nm wavelength range), extreme surface hardness (Mohs 9), high temperature resistance (up to 1900°C), and superior chemical stability, making them ideal for demanding applications in semiconductor, optical, and high-precision industrial equipment9.

Q2: What are the typical surface specifications achieved for 140mm double-side polished sapphire tubes?
A2: They typically achieve a surface roughness of ≤0.1μm (Ra) or better and a surface quality grade of 60/40 or superior per MIL-O-13810 standards, ensuring minimal light scattering and high dimensional accuracy for precision components35.

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