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

Our BN-H99 crucibles can withstand temperatures up to 2100°C in inert gas. Note that BN can withstand high temperatures in a vacuum as it decomposes after 1900°C. Edgetech offers custom boron nitride crucibles and other machined products with a minimum order of $200. A typical boron nitride crucible set has a crucible body and a graded boron nitride cover (a cover with a pressure balance hole can be used), or customized according to the drawing.

Boron Nitride Crucible Basic Information & Materials Type

Compound Formula




Melting Point

2700 °C



Density, g/cm3

2.1 g/cm3 (h-BN); 3.45 g/cm3 (c-BN)

Solubility in H2O


Electrical Resistivity, Ω·m



H<12”, OD or W&L<12”, Wall thick>2mm

Crucible Type

Cylindrical, Tapered Cylindrical, Rectangle, T-shaped, Customized

Boron Nitride 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 Advantages & Applications

Boron Nitride ceramic from Edgetech Industries Ceramics Division can withstand high temperatures in the high vacuum environment, plus it has excellent corrosion resistance and electrical resistance.

-Low wettability to molten metal

-Relatively high thermal conductivity and low thermal expansion

-Resistant to repeated impact at high and low temperatures, resistant to carbon corrosion

-High thermal shock resistance

-Extremely high operating temperatures and appropriate inert gas protection

Based on the above properties, Boron Nitride Ceramic Crucible is an ideal choice in a wide range of industries, such as:

-Crystal growth crucible

-Electron beam coating

-Sinter and smelt alloys, transparent ceramics, rare earth, and other materials


As a ceramic material, boron nitride is quite fragile in a lot of cases. Our Hot-Pressed Boron Nitride Crucible is carefully handled to minimize damage during storage and transportation. Suitable outer boxes and inner cushioning materials are used for BN products, vacuum packing is also engaged for some of the parts.