Customizable sapphire tube transparent sapphire pipe hardness Mohs
9.0 high wear resistance
Product overview
Sapphire tubes is a glass tube made by sapphire (Al2O3), a
synthetic stone with great physical, optical, mechanical and
chemical qualities. Its hardness is Mohs 9.0, the second hardest
only after the hardest diamond. It can have good performance under
high pressure, high temperature and vacuum environments owing to
its high melting point, which is 2053℃, great thermal conductivity,
and strong heat resistance. Thus, sapphire tube is an ideal
material for lots of application fields.
Sapphire tubes have a good transmittance of light, which makes it a
suitable material to be used in optical fields. Sapphire tube has
good light transmission in the spectral range of 200nm to 5500nm,
and the infrared transmittance almost does not change with the
temperature, and the working temperature can reach 1900℃, which
make it great to carry out spectral analysis in the optical field.
Sapphire tube also has lots of advantages, including its inherent
resistance to high temperature and chemical environments. It has
good acid and corrosion resistance. So, it is ideal for a variety
of analytical instruments. Therefore, sapphire tubes are ideal
materials in many range of applications.
If you need to find suppliers and manufacturers of sapphire tubes,
please contact us now.
Product parameter
| Item | Parameter |
| Product | Customized sapphire tubes |
| Material | Sapphire (AL2O3) |
| Crystal structure | Hexagonal |
| Outer diameter(mm) | 1.00-250.00 |
| Inner diameter(mm) | ≥0.10 |
| Density | 3.97g/cm3 |
| Melting point | 2053℃ |
| Highest working temperature | 1950℃ |
| Specific Heat Capacity | 0.75J/(g・K) |
| Dielectric Strength | 48 MV/m |
| Dielectric Constant at 20℃ | 9.3 MHz |
| Dielectric Loss at 20℃ | <1.4x10-4 MHz |
| Volume Resistivity at 20℃ | >1.0x1014 Ω•cm |
| Volume Resistivity at 500℃ | 1.0x1011 Ω•cm |
| Surface S/D | Polished unpolished and grinding |
| Tolerance | ±0.03mm |
| Application | Rolling bearing components |
| Grade | Optical grade without bubble |
| Advantage | High temperature, high pressure resistance |
Product properities
1. High hardness: Sapphire tubes hardness is Mohs 9.0 which is sencond hardness only
to the hardnest diamond, making sapphire tubes a good wear
resistance and scratching resistance and can stay stable in
relative hard condition.
2. Good wear resistance: Owing to sapphire tube's high hardness, sapphire tubes' wear
resistance is very great. Sapphire tubes can maintain structual
integrity and surface finishment after a long term use.
3. Good chemical performance: Sapphire tubes have a good chemical performance, they have a
resistance to chemical corrosion, they are a good aterial against
acid and corrosion.
4. High temperature resistance: Sapphire tubes's melting point is 2053℃, their highest working
temperature is 1950℃. So sapphire tubes can be applied in high
temperature condotions
5. Wide use: Sapphire tubes can be used in extensive fields, from laser systmes, optical instrements, high temperature fumaces
to chemical instrument processing.
Product applications
1.Optical Instruments: Sapphire tubes have a good light transmittance with minimal light
loss and distortion, making it widely used as optical windows or
lenses and optical instruments such as spectrometers, cameras, and telescopes.
2.High-Temperature Furnaces: Sapphire tubes highest working temperature is up to 1950℃, shows
a great resistance to high temperature and stays steady in high
temperature, so it can be protective sheath for temperature probes,
thermocouples, and heating elements, to making it in extreme high
temperature without degradation.
3.Semiconductor Manufacturing: Sapphire tubes can be used in semiconductor manufacturing
processes as part of equipment for handling and processing
semiconductor wafers, to provide mechanical support, chemical
resistance, and electrical insulation.
4.Laser Systems: Sapphire tubes can be widely used in laser systems as a
protective enclosure for laser components, ensuring optical clarity
and stability under high-power laser beams.
Duing to sapphire tubes high hardness of Mohs 9.0, high wear
resistance, high pressure resistance and other excellent mechanical
performance, chemical performance and optical performance, sapphire
tubes can be also applied in these fields: optical instrument,
chemical processing equipment, biomedical devices and research and
development.
