Applying the boron nitride coating of the type Solder-Stop BN25 covers areas of the substrate to be protected efficiently and prevents during the brazing the unwanted running of the solder. Solder-Stop BN25 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 BN25 is suitable with the brazing of iron, copper and nickel material as well as aluminium. As a ready for use version for standard applicationthe product Solder-Stop BN10 is available. Alternatively the quick drying product Boron-Nitride-Coating Grade E can be used.

Application

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 BN25 should be stirred. 
Solder-Stop BN25 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 BN25 is available in 1kg-containers and 6kg-containers.

Safety Advices

According to data available to us Solder-Stop BN25 is a non-hazardous preparation. An EC material safety data sheet is available.

Technical Data