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Boron Nitride (BN) Gasket,BN Gasket

Product Code : CE-BN-5N-GAS

Boron Nitride is an advanced synthetic ceramic material available in solid and powder form. Its unique properties – from high heat capacity and outstanding thermal conductivity to easy machinability, lubricity, low dielectric constant, and superior dielectric strength – make boron nitride a truly outstanding material. In its solid form, boron nitride is often referred to as “white graphite” because it has a microstructure similar to that of graphite. However, unlike graphite, boron nitride is an excellent electrical insulator that has a higher oxidation temperature. It offers high thermal conductivity and good thermal shock resistance and can be easily machined to close tolerances in virtually any shape. After machining, it is ready for use without additional heat treating or firing operations.

We provide standard products & tailor-made products for hot-pressed boron nitride Gasket. Except for pure BN99 plates & sheets, we also supply BN composites with silicon carbide, calcium borate, aluminum nitride, and zirconia, to fulfill various demands of the customers.

The hexagonal form (HBN) like graphite is the softest and most stable form among BN polymorphs and is therefore used as a lubricant and an additive to cosmetic products. The cubic (CBN) variety analogous to diamond features a high hardness which is inferior only to diamond. The rare wurtzite BN (WBN) modification is analogous to lonsdaleite, and it's going to even be harder than CBN. BN gaskets and BN seals are available from high-temperature-(1900C)-formed 99% pure composite boron nitride materials.

Please contact us if you need customized services. We will contact you with the price and availability in 24 hours.

Product Product Code Purity Size Contact Us
Boron Nitride (BN) Gasket,BN GasketCE-BN-2N-GAS99%Gasket
Boron Nitride (BN) Gasket,BN GasketCE-BN-3N-GAS99.9%Gasket
Boron Nitride (BN) Gasket,BN GasketCE-BN-4N-GAS99.99%Gasket
Boron Nitride (BN) Gasket,BN GasketCE-BN-5N-GAS99.999%Gasket

Product Information

Boron Nitride is an advanced synthetic ceramic material available in solid and powder form. Its unique properties – from high heat capacity and outstanding thermal conductivity to easy machinability, lubricity, low dielectric constant, and superior dielectric strength – make boron nitride a truly outstanding material. In its solid form, boron nitride is often referred to as “white graphite” because it has a microstructure similar to that of graphite. However, unlike graphite, boron nitride is an excellent electrical insulator that has a higher oxidation temperature. It offers high thermal conductivity and good thermal shock resistance and can be easily machined to close tolerances in virtually any shape. After machining, it is ready for use without additional heat treating or firing operations.

We provide standard products & tailor-made products for hot-pressed boron nitride Gasket. Except for pure BN99 plates & sheets, we also supply BN composites with silicon carbide, calcium borate, aluminum nitride, and zirconia, to fulfill various demands of the customers.

The hexagonal form (HBN) like graphite is the softest and most stable form among BN polymorphs and is therefore used as a lubricant and an additive to cosmetic products. The cubic (CBN) variety analogous to diamond features a high hardness which is inferior only to diamond. The rare wurtzite BN (WBN) modification is analogous to lonsdaleite, and it's going to even be harder than CBN. BN gaskets and BN seals are available from high-temperature-(1900C)-formed 99% pure composite boron nitride materials.


Synonyms

HBN Gasket, hot pressed BN Gasket,h-BN; Elbor; hexagonal boron nitride; Boron mononitride; Nitridoborane; Nitriloborane

Boron Nitride Gasket Specification

Dimensions

Per your request or drawing

We can customized as required


Properties(Theoretical)


GradeBN99
Purity %BN99%
Other CompositeB2O30.20%
Oxygen<0.5%
Carbon0.02%
Calcium0.04%


Structure
Hexagonal boron nitride (hBN)
Density
2 g/cm3
Hardness
300 HL
Flexural Strength
3000 Psi
Coefficient of thermal expansion(25°C-1200°C)-1~2.5 (10-6/K)
Thermal conductivity
50 W/mk
Max operating
  Temperature
Atmosphere900°C

Vacuum1800°C

Inert2100°C
RT Resistivity
>1014 Ω.cm
Melting Point
2973   °C
Poisson's Ratio
0.11
Specific Heat
840 to 1610 J/kg-K
Thermal Conductivity
29 to 96 W/m-K
Thermal Expansion
0.54 to 18 µm/m-K
Young's Modulus
14 to 60 GPa
Exact Mass
25.012379
Monoisotopic Mass
25.012379


Mechanical   PropertiesUnitGrade AGrade HPGrade AX05Grade MGrade M26Grade ZSBN


BNBNBNBN -40%、 SiO260%BN -60%、SiO2-40%BN -45%、ZrO2-45%、bsg <10
Densityg/cm3221.92.32.12.9
Compressive StrengthMPa143    1869625316.9 289.4
218.7  253.8
Flexural Strength @ 25°CMPa94       6559     4522     21103     7662     34144    107
Young modulus                     GPa47     7440     6017     7194    106
71     71
Thermal   Properties






Thermal ConductivityW/mK30      3427     2978    13012     1411     2924     34
Max Temp (Oxidizing) 1°C850℃850℃850℃1000℃+1000℃+850℃
Max Temp (Inert) 1°C1200℃1150℃2000℃1000℃+1000℃+1600℃
25-400°C10-6/K3.0   3.00.6   0.4-2.3   “0.71.5   0.23.0   0.44.1    3.4
400-800°C10-6/K2.0    1.41.1    0.8-2.5  1.11.2   0.42.5   0.15.6    4.3
800-1200°C10-7/K1.9     1.81.5    0.91.6    0.41.2   0.83.0   0.17.2    5.2
1200-1600°C10-8/K5.0   4.82.8   2.70.9    0.3

4.6    3-4
1600-1900°℃10-9/K7.2   6.1
0.5   0.9


Electrical Properties






Dielectric StrengthkV/mm88>1079>1066>9
Dielectric Constant1 MHz4.6    4.24.3   4.04.0    4.03.4   3.74.5    3.8
Dissipation Factor1 MHz1.2-3  / 3.4-31.2-3  / 3.0-31.2-3  / 3.0-33.0-3  / 3.1-31.7-3 / 6.7-34.5-2 / 6.7-2
Volume Resistivity @25°Cohm-cm>10  >1014>1013  >1013>1013  ●1014>10'4 >1014>1013  >10'4≥1014   、101

Note: the former = Parallel and  the latter= Perpendicular

 

Hexagonal Boron Nitride Materials Types

- Pyrolytic boron nitride PBN: 99.99% boron nitride

- High purity boron nitride HPBN: >98.5% boron nitride + boron oxide

- Calcium Borate Boron Nitride CABN: >97.5% Boron Nitride + Calcium Borate

- Aluminum Nitride Boron Nitride ALBN: Boron Nitride + Aluminum Nitride + Boron Aluminum Oxide

- Zirconia Boron Nitride ZRBN: Boron Nitride + Zirconia + Boron Oxide

- Zirconium Aluminum Boron Nitride ZABN: Boron Nitride + Zirconia + Aluminum Nitride + Aluminum Boron Oxide

- Silicon carbide boron nitride SCBN: boron nitride + silicon carbide + boron silicon oxide

 

Boron Nitride Gasket Materials

MaterialDescription
BN99Hot pressed   at high temperature (1900C).Excellent   corrosion resistance and thermal conductivity. Limited wear resistanceSelf-bonded   and high purity (>99%)
BNBOGeneral-purpose   materialBonded by   boric oxide
BNCBCalcium   borate bonded boron nitrideEnhanced   moisture resistance
BN60BN 60%,   SiO2 40%
BN40BN 40%,   SiO2 60%
ZSBNBN-45%,   Zr2O3 45%


Boron Nitride Gasket Advantages

- Excellent machinability,BN rods are easily machinable, and they are of high performance: 

- Low wettability to molten metal

- Low dielectric constant,k=4

- Relatively high dielectric strength,

- High dielectric breakdown strength, >40 KV/mm

- Relatively high thermal conductivity with low thermal expansion Extremely high working temperature with proper inert gas protection (>3000C has been recorded). Chemical Vapor Deposition (CVD)

- Excellent thermal shock resistance

- High electrical resistivity – excluding aerosols, paints, and ZSBN grade

- Low density • High thermal conductivity

- Anisotropic (thermal conductance differs between parallel and perpendicular planes to pressing direction)

- Corrosion resistant

- Good chemical inertness

- High temperature material


Boron Nitride Machining

Hexagonal boron nitride can be machined into highly complex geometries with very tight tolerances.


Applications of Boron Nitride Gasket

 

Packing of Boron Nitride Gasket

Standard Packing:

Sealed bags in carton boxes. Special package is available on request.

As a ceramic material, BN is quite fragile in a lot of cases. The BN Gasket are usually held in plastic bags by vacuum, and protected with heavy foam.

ATTs’ BN Gasket is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

Chemical Identifiers


Linear   FormulaBN
MDL   NumberMFCD00011317
EC   No.233-136-6
Beilstein/Reaxys   No.N/A
Pubchem   CID66227
IUPAC   Nameazanylidyneborane
SMILESB#N
InchI   IdentifierInChI=1S/BN/c1-2
InchI   KeyPZNSFCLAULLKQX-UHFFFAOYSA-N
CAS10043-11-5


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