• very good non-wetting by solder
• very good separation efficiency
• perfect protection of the substrates from solder
• compatible with most solders
• application such as house paints
• ready for use product for standard performance
• contains "white graphite"


Applying the boron nitride coating of the type SOLDER-STOP BN10 covers areas of the substrate to be protected efficiently and prevents during the brazing the unwanted running of the solder. SOLDER-STOP BN10 is applied to the areas to be protected by brushing or spraying. It can be used at air to 1000°C and is compatible with mist materials used with brazing such as copper solder, silver solder or AlSi-solder. SOLDER-STOP BN10 is suitable with the brazing of iron, copper and nickel material as well as aluminium. As a concentrate for highest requirements the product SOLDER-STOP BN25 is available. Alternatively the quick drying product Boron-Nitride-Coating Grade E can be used.


• The surfaces which can be coated should be clean, dry free of dust, perhaps degreasing may be necessary.
• Only after long storage time SOLDER-STOP BN10 should be stirred.
• SOLDER-STOP BN10 can be applied by brushing or spraying. Dilute with distilled water if necessary.
• In order to achieve even coats spraying is recommended.
• After the application the coating must be dried carefully, either at air or if necessary in a drying furnace or with a gas burner.

Storage-Container Size

Keep containers closed and protect product against frost. A storage temperature of >5°C (>41°F) is recommended. SOLDER-STOP BN10 is available in 1kg-containers and 6kg-containers.

Technical Data



Ceramic Constituent

Boron nitride

Solid Content (boron nitride)



1.1 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.