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Boron Nitride Ceramic Rod

  • Boron Nitride Ceramic Rod
  • Boron Nitride Ceramic Rod
  • Boron Nitride Ceramic Rod
Boron Nitride Ceramic Rod
  • MASCERA
  • Xiamen, China
  • 20 days after order
  • 3000 pieces per month

Boron nitride rods are made of powdered hexagonal boron nitride through high-temperature vacuum hot-pressing sintering. Boron nitride rods have good resistance to high temperatures, extremely stable chemical properties, resistance to strong acid corrosion and high electrical insulation properties. The distinctive feature of boron nitride rod is that it is non-wetting with most molten metals, therefore it can be used to produced ceramic nozzles or crucibles for metal smelting jobs. Unlike alumina ceramic or zirconia ceramic, boron nitride rods have low hardness and good machinablity, the machining will be easily done with common metal working tools.

Any inquiry please email info@mascera-tec.com or call +86 13860446139

Boron Nitride Ceramic Rod

Product Information
Item No.
MSJ/BN004
Materialhot pressed boron nitride (HBN)
Shapeceramic rod
Colorlight grey
Sizecustomized
Surface roughnessfine grinding
MOQ10 pcs per type
Application
industrial applications


Boron nitride rods are made of powdered hexagonal boron nitride (HBN) through high-temperature vacuum hot-pressing sintering. Boron nitride rods have good resistance to high temperatures, extremely stable chemical properties, resistance to strong acid corrosion and high electrical insulation properties. The distinctive feature of boron nitride rod is that it is non-wetting with most molten metals, therefore it can be used to produced ceramic nozzles or crucibles for metal smelting jobs. Unlike alumina ceramic or zirconia ceramic, boron nitride rods have low hardness and good machinablity, the machining will be easily done with common metal working tools.


Mascera is a reputable supplier for boron nitride rod, the maximum length we could produce is up to 480mm. To meet different property requirement of users, we have developped several grades of boron nitride ceramic. Except for regular 99% boron nitride ceramic, we also supply boron nitride ceramics composited with zirconia ceramic, aluminum nitride, silicon carbide and alumina ceramic etc. 




Main properties of boron nitride rods


  • Low density

  • High electrical resistivity

  • High breakdown voltage resistance

  • High thermal conductivity

  • Low thermal expansion coeffient

  • Good thermal shock resistance 

  • High working temperature in vacuum and gas protection condition

  • Good corrosion resistance

  • Non-wetting with metals (without oxidization)

  • Good Machinability  



Typical applications of hot pressed boron nitride


  • High temperature furnace fixtures and supports

  • Nozzles for metal powder gas atomization

  • Nozzle for amorphous soft magnetic

  • Plasma arc insulators

  • Crucibles or containers for metals or glasses smelting

  • Break rings for continuous casting of metals

  • Electrical insulators for high temperature vacuum equipment

  • Electrical insulator for PVD/CVD vacuum coating equipment

  • Electrical insulator for semiconductor equipment

  • Thermocouple protection tubes



Material Data Sheet


Material TypeBN-997
BN-99BN-ABN-BBN-CBN-DBN-E

Main Content

BN>99.7%

BN>99%

BN+AL+SI

BN+ZR+AL

BN+SIC

BN+ZRO2

BN+AlN

Color

White

White

Light Grey

Light Grey

Grey Green

Dark Grey

Grey Green

Density (g/cm3)

1.6

1.95-2.0

2.2-2.3

2.25-2.35

2.4-2.5

2.8-2.9

2.8-2.9

Flexural Strength (Mpa)

18

30

65

65

80

90

90

Compressive Strength (Mpa)

45

85

145

145

175

220

220

Electrical Resistivity (Ω.Cm)

>1014

>1014

>1013

>1013

>1012

>1012

>1013

Max. Service Temp. (℃) 

@Air Condition

900

900

900

900

900

900

900

Max. Service Temp. (℃) @Vacuum Condition

1800

1800

1750

1750

1800

1800

1750

Max. Service Temp. (℃) 

@Inert Gas Condition

2100

2100

1750

1750

1800

1800

1750

Thermal Conductivity (W/Mk)

35

40

35

35

45

30

85

Thermal Expansion Coefficient (25 - 1000℃) (10-6/K)

1.5

1.8

2.0

2.0

2.8

3.5

2.8



Performance comparison of boron nitride ceramics and alumina ceramics:


Compared with alumina ceramics, boron nitride ceramics have the following advantages:


1. Boron nitride ceramic has maximum working temperature under atmosphere protection up to 2100 degrees, and alumina ceramic does not exceed 1700 degrees.

2. The thermal shock resistance of boron nitride ceramic is much better than alumina ceramic, boron nitride ceramic will not crack when unergoing rapid temperature rise or fall, it will not crack if it is taken out of the 1000 celsium degree furnace and blowed and quenched continuously for 100 times. Alumina ceramic is easy to crack when working temperature rises or falls quickly.

3. Electrical insulation strength of boron nitride ceramic is 3-4 times that of alumina ceramic.

4. Boron nitride ceramic does not react or bond with moleten glasses or metals, are used as containers for high-temperature sintering or melting crucibles, setter plates, etc.


Compared with alumina ceramics, the disadvantages of boron nitride ceramics are:


1. The strength, hardness and wear resistance of boron nitride ceramics are lower than that of alumina ceramic, and it is not suitable for use under vibration and friction conditions.

2. The use temperature of boron nitride ceramics in the air is only 1000 celsium degrees, and it will oxidize if it exceeds 1000 degrees. 



Available shapes of hot pressed boron nitride


  1. Ceramic rod / ceramic pin

  2. Ceramic tube / ceramic bushing / ceramic sleeve

  3. Ceramic ring / ceramic washer / ceramic spacer 

  4. Ceramic disc

  5. Ceramic plate / ceramic block

  6. Ceramic nozzle

  7. Ceramic crucible

  8. Other custom ceramic parts



Packing & Shipment


Package typecarton box with foam protection
Payment terms

TT / Western Union / Paypal

50% payment in advanced and 50% before shipment

Loading port Xiamen, China
Shipping wayBy sea / air / door-to-door express

boron nitride rod

ceramic rod



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