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| Categories | Sapphire Parts |
|---|---|
| Brand Name: | ZMSH |
| Model Number: | Sapphire Tubes |
| Certification: | rohs |
| Place of Origin: | CHINA |
| MOQ: | 25 |
| Price: | by case |
| Payment Terms: | T/T |
| Delivery Time: | 2-4weeks |
| Packaging Details: | package in 100-grade cleaning room |
| Material: | Optical-grade sapphire single crystal (α-Al₂O₃) |
| Tube length: | ~140mm (customized) |
| Length Tolerance: | ±0.02mm or adjusted based on length |
| Concentricity Error: | ≤ 0.05mm |
| Clear Aperture: | > 90% |
| Applications: | Industrial Equipment & Sensing, Research & Special Equipment |
| Company Info. |
| SHANGHAI FAMOUS TRADE CO.,LTD |
| Verified Supplier |
| View Contact Details |
| Product List |
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.
The core advantages of such polished sapphire tubes stem from the intrinsic properties of sapphire material and precision polishing processes:
1. Extreme Hardness & Wear Resistance: Polished sapphire tubes Mohs hardness up to Level 9, making it highly resistant to scratching and wear, suitable for environments with particulates or mechanical contact.
2. Excellent Optical Properties: Good transmittance across UV, visible, and IR (200nm – 5500nm) spectra, with minimal temperature-dependent variation in IR transmittance, ideal for optical windows and transmission channels.
3. Exceptional High-Temperature Resistance & Thermal Stability: Polished sapphire tubes can withstand temperatures up to 1900°C or higher (melting point 2030-2050°C), maintaining stable physicochemical properties at high temperatures.
4. Good Chemical Stability: Polished sapphire tubes are resistant to most acids and alkalis, suitable for harsh chemical environments.
5. Advantages of Precision Polishing:
Leveraging these properties, double-side polished sapphire tubes are used in various high-end fields:
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.
| Parameter Name | Description | Typical Value for 140mm Double-Side Polished Sapphire Tube (Reference) |
Material | Optical-grade sapphire single crystal (α-Al₂O₃) | Optical-grade Sapphire Single Crystal (α-Al₂O₃) |
Outer Diameter Range | Tube outer diameter | Customizable (e.g., several mm to hundreds of mm) |
Outer Diameter Tolerance | Allowable deviation of outer diameter | ±0.02mm or stricter |
Inner Diameter Range | Tube inner bore diameter | Customizable (e.g., 0.2mm to 100mm) |
Inner Diameter Tolerance | Allowable deviation of inner bore diameter | ±0.02mm or stricter |
Length | Tube length | ~140mm (customized) |
Length Tolerance | Allowable deviation of length | ±0.02mm or adjusted based on length |
Wall Thickness Deviation | Uniformity of tube wall | Consult supplier |
Concentricity Error | Offset between inner and outer wall centers | ≤ 0.05mm (higher precision available upon request) |
Straightness Tolerance | Axial straightness of the tube | ≤ 0.01mm/140mm or better |
Surface Roughness (Ra) | Microscopic surface unevenness (inner/outer walls) | ≤ 0.1 μm (Ra, inner/outer walls) (higher standards achievable, e.g., Ra ≤ 0.05μm) |
Surface Quality | Scratch/Dig Standard (e.g., MIL-O-13810) | 60/40, 40/20, or better (inner/outer walls) |
Clear Aperture | Percentage of effective light-transmitting area | > 90% (typically ≥95%) |
*We accept customized one, please feel free to contact us about your requirements.
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.
Tags: #Sapphire Tubes, #Custom, #High Hardness, #Semi-Polished, #High Hardness, #Infrared Windows, #Al₂O₃ Single Crystal, #Optical Instruments, #Double-Side Polished,
#Sapphire tube length 140mm, #Optical Component Protection Tubes, #Sapphire Optical
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