Boron-Nitride-Coating Grade E
• high temperature release and lubricating agent
• produces non-wetting surfaces
• for metal melts such as aluminium and magnesium, zinc and lead
• for pressing and high pressure sintering of hard metal powders
• quick drying formulation
• contains "white graphite"


Boron-Nitride-Coating Grade E is a secial coating on the basis of boron nitride and ethanol. This coating shows a very good non-wetting behaviour against many metal melts (like Al, Mg, Zn and Pb). Dies, mould, thermocouples, etc. can be coated with Boron-Nitride-Coating Grade E. The outstanding high temperature lubricating qualities enable a good release of castings from moulds and effectively prevent sticking of melts. Short drying times provide a fast and smooth application.


• Resuspend or shake Boron-Nitride-Coating Grade E prior to use. Dilute with ethanol if necessary.
• Apply coating on clean surfaces by brushing or spraying. Additional layers may be applied after drying.
• A thin coating application (50-150µm, 2-6 mils) is favourable. With a thick coating application exists the danger of cracking and chipping off.

Storage-Container Size

Keep container tightly closed and store product in a well ventilated and cool place. Boron-Nitride-Coating Grade E is available in containers of 1000ml.

Technical Data



Ceramic Constituent

Boron nitride

Solid Content (boron nitride)



Ethanol (ethyl alcohol)


0.86 g/cm³

Temperature (max. Application)

1000°C (1832°F) (at air)

1800°C (3272°F) (under inert gas)


© 2023 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst

These recommendations are believed to be correct. However, no guarantee of their accuracy is given. Therefore, purchasers shall make their own tests to determine suitability for their use. These products are offered for industrial and related uses (e.g. research and development) only. However the user must take the necessary precautions appropriate for products containing chemicals. This description does not imply the absence of any patents, the responsibility whatsoever solely rests with the user.