SINTYRON  bn 99% boron nitride ceramic tube

Product Instruction
Hexagonal Boron Nitride has a microstructure similar to that of Graphite. In both materials this structure, made up of
layers of tiny platelets, is responsible for excellent machinability and low-friction properties. we called hexagonal boron
nitride (HBN) or white graphite.

Product details

Types of Boron Nitride Tubes:

1. Hexagonal Boron Nitride (h-BN) Tubes:

   • Used in high-temperature insulation, thermocouple protection, and semiconductor processing.

   • Easily machined into complex shapes.

2. Cubic Boron Nitride (c-BN) Tubes:

   • Extremely hard, used in cutting tools and abrasion-resistant applications.

3. Hot-Pressed Boron Nitride (HPBN) Tubes:

   • Denser and stronger than standard h-BN, used in demanding environments.

Properties of Boron Nitride (BN) Ceramic Tubes:

1. Thermal Stability:

   • High thermal conductivity (comparable to metals in hexagonal BN, or h-BN).

   • Excellent thermal shock resistance due to low thermal expansion.

   • Can withstand temperatures up to 900°C (in air) and 2800°C (in inert atmospheres).

2. Electrical Insulation:

   • BN is an excellent electrical insulator, even at high temperatures.

3. Chemical Resistance:

   • Resistant to most molten metals, acids, and alkalis.

   • Chemically inert in non-oxidizing environments.

4. Mechanical Properties:

   • Hexagonal BN (h-BN) is soft and machinable, similar to graphite.

   • Cubic BN (c-BN) is ultra-hard, second only to diamond.

   • Low friction coefficient (self-lubricating).

5. Dielectric Strength:

   • High dielectric breakdown voltage, making it suitable for high-voltage applications.

Applications:

• Semiconductor & Electronics: Crucibles, insulators, and diffusion barriers.

• Aerospace: High-temperature components and radomes.

• Metallurgy: Molten metal containment, thermocouple sheaths.

• Vacuum Systems: High-purity components for CVD and PVD processes.

• Defense: Transparent microwave windows (in composite forms).

Manufacturing & Customization:

• BN tubes can be sintered, hot-pressed, or CVD-deposited.

• Available in various sizes, wall thicknesses, and purities (e.g., 99%+ purity for semiconductor use).

• Can be coated or composite-reinforced for enhanced properties.

Why choose us

    Liling Xingtailong Special Ceramic Co., Ltd Founded in 1997, is an independent R&D and manufacturing enterprise

integrating scientific research and production. "Superior quality, preferential price" is our business purpose. The

company mainly produces PBN and BN products. Over the years, the company has been deeply involved in

development, and has successively obtained (ISO9001, Alibaba's ten-year-old high-quality supplier, China Manufacturing

Network certified supplier, high-tech enterprise certification, gold product enterprise certification, ceramic industry AAA

credit unit，product ROHS testing certification, and 6 invention patents. The company has always adhered to the goal of

quality survival, innovative development, honest brand, and meticulous and thoughtful after-sales service. Region, product

quality and service are highly recognized by customers.   Striving to be Stronger, hard work and progress. The company initiates

a professional responsible person model, continuously improves and innovates, and strives to provide each customer with better

and more efficient services.   With strong strength, reasonable price and professional service, We has established long-term

cooperative relations with large enterprises at home and abroad. "Excellent quality, preferential price" is our business purpose.  

We sincerely look forward to cooperating with more domestic and foreign customers and developing together.

Customer feedback

FAQ

Why us?
* Professional manufacturer since 1997.
* Strict quality control on production process and tolerance.
* Free samples available
* Customized production based on your drawing or specification
* On-time delivery and reliable support and service
* Inventory available for quick shipment
* We keep confidentiality of all the drawings and business information between us.
Are you a trading company or a manufacturer?
* We are a manufaturer. 
Can you provide the free samples?
* Yes,we can offer free sample if we have it in stock,but the courier fee is to be collected.
Do you accept customized production based our specification?
* Yes,we offer OEM and ODM service. Just send us your drawing if you have it. If you don’t have a drawing, just tell us your idea, we will work out the drawing for you.

What's the delivery time?
* 7 working days for standard products 30 days for customized products. 
What is the MOQ?
* No limit to the quantity. We can offer the best proposal and solutions according to your condition.
What is the payment terms you accept?
* T/T,LC,Western Union,moneygram are acceptable.
How to deal with the faulty?
* Firstly, Our product are produced in strict quality control system and the defective rate will be less than 2%.
If there are problems with the product, we will provide free replacement.