Boron Nitride Ceramic Tube
GORGEOUS BN tubes are made of high-quality boron nitride and can be customized in various purities and sizes.
High Quality Boron Nitride Tube
Custom Processing Suppliers
Boron Nitride Tube Description
BN tubes are self-lubricating and high-temperature resistant, maintaining lubrication even in high vacuum environments. GORGEOUS has extensive experience in manufacturing and supplying high-quality boron nitride ceramic products. Our boron nitride tubes are made from high-quality boron nitride powder through hot pressing and sintering, and can be fabricated to custom sizes and specifications.
We also offer boron nitride thermocouple protection tubes, boron nitride insulation tubes, and other products. Custom sizes are available. Please contact us for a quote.
Supply Various Shapes of Boron Nitride Tubes
Provide Customers with Customized Solutions According to Their Needs
Supply of Boron Nitride Tubes for Various Purposes
We can provide customization of standard silicon nitride tubes, insulation tubes, and boron nitride protection tubes with favorable prices and fast delivery.

Standard Boron Nitride Tube
We supply customized standard BN tubes with multiple sizes available. Please send us your request for quotation. -

Boron Nitride Thermocouple Tube
BN thermocouple protection tubes can withstand high temperatures up to 2000°C, effectively extending the life of the thermocouple and enabling accurate temperature measurement.
Advantages of Boron Nitride Tubes
High Hardness
Insulation
Corrosion Resistance

High Temperature Resistance
Product Parameters
| Name | Boron nitride | |||
| Characteristic | Hexagonal boron nitride (h-BN) | Cubic phase boron nitride (c-BN) | ||
| Crystal Structure | Hexagonal | Cubic | ||
| Lattice Constant (Å) | a = 2.504, c = 6.657 | a = 3.615 | ||
| Density (g/cm³) | 2.15 | 3.45 | ||
| Hardness (Mohs Hardness) | 1-2 | 9-10 | ||
| Name | Boron nitride | |||
| Characteristic | Hexagonal | Cubic | ||
| Thermal Conductivity (W/mK) | 600-700 | 2000-2700 | ||
| Conductivity (S/m) | 10⁻¹⁵ | 10⁻¹⁰ - 10⁻⁸ | ||
| Heat Resistance | Stable at high temperatures, suitable for high-temperature applications | Stable at high temperatures, suitable for high-temperature applications | ||
| Resistance to Chemical Attack | Good resistance to acids and bases | Good resistance to acids and bases | ||
| Mechanical Strength | Low | Very high | ||
| Optical Properties | Transparent, high optical transmittance | Translucent, optical properties similar to diamond | ||
| Applications | Lubricants, insulation materials, ceramic reinforcements | High-temperature/high-pressure tools, abrasives, cutting tools | ||
Application of Boron Nitride Ceramic Tube

High Temperature Insulation
Boron nitride ceramic tubes have extremely low electrical conductivity even at high temperatures (resistant to 2000°C). They can be used as insulating support tubes for heating wires and thermocouples, and effectively prevent short circuits and metal corrosion.
Commonly used in: High voltage and high temperature insulating tubes and insulators

High temperature gasliquid transportation
BN tubes have good chemical stability and do not react with nitrogen, argon, hydrogen, or fluoride. They can be used to transport corrosive gases and liquids.
Commonly used in:Inert gas transportation, vacuum coating equipment, semiconductor production

Vacuum Metallurgy
BN tubes can be used as high-temperature crucible tubes and evaporation source support tubes, and are particularly suitable for metals such as aluminum, magnesium, and copper. BN does not react with these metals.
Commonly used in:High-purity metal and precious metal melting and evaporation

Semiconductor Electronic Devices
In ultra-high vacuum and high temperature environments, BN tubes can be used as hot zone isolation tubes, reaction gas delivery tubes or protection tubes to prevent reaction products from contaminating devices.
Commonly used in:Wafer manufacturing, compound semiconductor (GaAs, GaN) epitaxial growth, ion implantation equipment

Aerospace
BN tubes can be used as heat flow channels or insulation sleeves in extreme environments such as the aerospace industry to ensure structural stability under high temperature and strong radiation conditions.
Commonly used in:High-temperature components of aerospace propulsion systems, high-temperature insulating tubes
Are You Worried About the MOQ?
Special minimum order quantity (MOQ) of one piece is available to meet customers with smaller needs. Take the first step and experience our services.
Why Choose GORGEOUS?
GORGEOUS prioritizes quality control to ensure that every boron nitride tube product meets customer specifications. Our rigorous quality inspection process ensures that every step, from raw materials to finished ceramic product, undergoes precise inspection and testing.
Furthermore, the GORGEOUS factory is certified to IATF16949:2016 for the automotive industry and ISO9001:2015 for quality management, enabling us to provide customers with the highest quality custom services.
Our Pass Successes Testimonials
We have been sourcing technical ceramics from a number of suppliers and this has been one of the smoothest experiences so far.
Sarah Wilson
The service and communication were excellent throughout the entire process.
John
We place great emphasis on material performance. The boron nitride tubes ordered from GORGEOUS exceeded our expectations in terms of thermal shock resistance and dielectric strength.
James Walker
FAQs
Why are boron nitride tubes suitable for high-temperature applications?
Boron nitride tubes offer high thermal conductivity, a relatively low coefficient of thermal expansion, and excellent thermal shock resistance, making them an ideal choice for certain high-temperature applications. Under appropriate inert gas protection, boron nitride ceramic tubes can operate at temperatures exceeding 3000°C.
Can boron nitride be customized for specific applications?
Yes, GORGEOUS can customize boron nitride to meet the needs of various applications. This includes length, diameter, and connector type (e.g., flat, square, threaded, etc.).
How should boron nitride tubes be stored?
Boron nitride should be stored in a clean, dry environment away from moisture and mechanical stress.
Are boron nitride tubes chemically reactive?
Boron nitride is chemically inert and not easily corroded by chemicals, making it suitable for use in corrosive environments.