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Hex Boron Nitride
Density : 2.00-3.00 g/cm3
Maximum Using Temp. : 900-2,000 degree C
Features : Electrical Insulation, High Heat Performance
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Product Introduction
Hex boron nitride is a material with the similar characteristics as graphite. The material boron nitride is a crystal composed of nitrogen atoms and boron atoms. It has two different variants of hexagonal and cubic. UNIPRETEC's hbn hexagonal boron nitride is hot pressing sintered in special vacuum furnace at temperature up to 2,200 degrees Celsius.
In addition to its excellent thermal shock resistance, high temperature resistance (950 degrees Celsius in an air environment, 1,900 degrees Celsius in a vacuum environment, and 2,000 degrees Celsius in an inert gas environment) and easy processing characteristics, another notable feature is excellent electrical insulation. Therefore, hexagonal BN ceramic is widely used as insulators for high-voltage and high-frequency electricity and plasma arcs, as well as insulators for various heaters, heating pipe bushings and high-temperature, high-frequency, high-voltage insulation and heat dissipation components, and materials for high-frequency applications electric furnaces. Hbn Boron Nitride can provide very long service life, thus ensuring the stable operation of machines and equipment, reducing the frequency of replacement, is an excellent material selection solution. Moreover, as mentioned above, h boron nitride has good machinability, so no matter what specifications the customer needs, it can be made flexibly.
Favorable Characteristics
√ low thermal expansion | √ excellent electrical insulator | √ high thermal shock resistance |
√ low wettability to molten metals | √ relatively high thermal conductivity | √ extremely high working temperature |
Material Data Sheet
ITEM | UNIT | BN-2000 | BN-2300 | BN-2500 | BN-2800 |
Main Content | - | BN>99% | BN+Al2O3 | BN+SiC | BN+AlN |
Color | - | white | light grey | dark grey | dark grey |
Density | g/cm3 | 1.95 - 2.00 | 2.25 - 2.35 | 2.40 - 2.50 | 2.75 - 2.85 |
Flexural Strength | Mpa | 30 | 65 | 80 | 85 |
Compressive Strength | Mpa | 55 | 145 | 175 | 205 |
Electrical Resistivity | Ω·cm | >1014 | >1013 | >1012 | >1013 |
Max. Working Temperature (air) | ℃ | 900 | 1,000 | 1,000 | 1,000 |
Max. Working Temperature (vacuum) | ℃ | 1,900 | 1,750 | 1,750 | 1,800 |
Max. Working Temperature (inert) | ℃ | 2,000 | 1,750 | 1,750 | 1,800 |
Thermal Conductivity | W/m.K | 35 | 30 | 40 | 85 |
Thermal Expansion Coefficient (25 - 1,000 ℃) | 10-6/K | 1.5 | 2.0 | 2.8 | 2.8 |
∆ The above data is offered for reference and comparison only, exact data will vary depending on manufacturing method and part configuration.
Team of UNIPRETEC has been committed to the research and development of boron nitride materials for over 10 years. We can provide boron nitride materials with a variety of formulations, such as BN-2800, which can not only has excellent insulation properties, but also provide good thermal conductivity rate. In addition to BN, you can also purchase products made of other ceramic materials at UNIPRETEC, such as alumina, zirconia, silicon carbide, silicon nitride, machinable glass ceramics, etc. We are good at customized requirements, as long as you can provide sizes or drawings, we can evaluate according to your requirements. Welcome to inquire.
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