Boron Nitride (BN) Crucible-Heeger Materials Inc View larger

Boron Nitride (BN) Crucible

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Boron nitride crucible is processed according to the size required by the customer after the boron nitride powder is hot-pressed and sintered into a product block. Boron nitride, also known as white graphite, has good electrical insulation, thermal conductivity, excellent thermal shock resistance and chemical stability, and good moisture resistance to molten metal, slag, and glass.

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Data sheet

MaterialsBN, ZSBN, BNBO

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Boron nitride ceramics have the advantages of high-temperature resistance, use temperature of 2000 degrees and alumina does not exceed 1700 degrees. The heat shock resistance is very good, and the boron nitride ceramics will not crack, 1000 degrees of furnace heat out for 20 minutes to blow the air and cold repeatedly hundreds of times will not crack. All sizes can be processed according to the customer's requirements.

Boron nitride is prone to moisture absorption and should not be placed in wet areas when the crucible is unused. Sealed, can not be washed, dirty, and wiped directly with sandpaper.

Boron Nitride CruciblesBoron Nitride (BN) CrucibleBoron Nitride Crucible with Lid Drawing

Boron Nitride Crucible Parameters



Maximum use temperature

2000 ℃ (Insert: Ar/N2)

1800 ℃ (Vacuum)

900 ℃ (Air)






Lid Height

2 mL

16 mm

12 mm

20 mm

3 mm

3 mL

20 mm

16 mm

18 mm

3 mm

5 mL

24 mm

20 mm

18 mm

3 mm

10 mL

30 mm

24 mm

26 mm

3 mm

50 mL

50 mm

44 mm

37 mm

3 mm


Dimensions can be customized upon request. The dimensions listed above are for reference only. Please contact us if you need tight tolerance.

Boron Nitride Crucible Available Materials




Hot pressed at high temperature (1900).
 Excellent corrosion resistance and thermal conductivity. Limited wear resistance
 Self-bonded and high purity(>99%)


General-purpose material
 Bonded by boric oxide


Calcium borate bonded boron nitride
 Enhanced moisture resistance


BN 60%, SiO2 40%


BN 40%, SiO2 60%


BN-45%, Zr2O3 45%

Boron Nitride Crucible Using Tips

  1. In order to ensure the service life of the crucible, it is recommended to use it under a protective gas environment (Ar/N2).
  2. The maximum working temperature in the air is 900℃, the crucible will be oxidized when exceeding 900℃, which will affect its use.
  3. It is recommended to store the crucible in a dry and sealed container.
  4. Use fine sandpaper or cloth to remove any dirt or residue from the crucible, do not use water to clean the crucible.
  5. Not to be used for the treatment of samples such as antimony oxide, chromium oxide, molybdenum trioxide, arsenic trioxide, hard titanium alloy, high-lead glass glaze, boron phosphates, potassium phosphate, chloride, and so on.

Boron Nitride Crucible Available Materials

  1. Black metal: iron, copper, aluminum, nickel, magnesium, bismuth, zinc, etc., alloy FE-CO-NI-SI CO-ZR-NB.
  2. No reaction between water and acid at room temperature.
  3. Rare earth, boron acid, and ammonia.

Boron Nitride Crucible Unavailable Materials

  1. Melantimony trioxide, chromium seven-oxide, molybdenum trioxide, arsenic trioxide, and titanium carbide.
  2. Boron phosphate erodes boron nitride in 1400 degrees of nitrogen and will react with hot thick or molten alkali and hot chlorine gas.

Boron Nitride Crucible Applications

Boron nitride crucible can endure high temperatures in a high vacuum environment, plus it has excellent corrosion resistance and electrical resistance. Therefore, boron nitride ceramic product is an ideal choice in a wide range of industries, such as:

  • Electric insulators in vacuum system
  • Insulators for high-temperature furnace
  • Spacers for glass melting
  • Boron Nitride parts for ion injection equipment

Boron Nitride Crucible Packing

Boron Nitride (BN) Crucibles are carefully packaged in cartons boxes with foam protection to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

Boron Nitride (BN) Crucibles Packing

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