This white brazing flux is formulated for smooth application, even coverage, and protection through brazing heat cycles in normal-heat applications. It is recommended for copper and copper alloys except aluminum bronze, and works with many silver brazing filler metals and phosphorus-copper-silver alloys, including copper-to-brass brazing. Suitable for steel, stainless steel, nickel alloys, and other ferrous base metals, it has an activity range of 1050°F-1600°F (565°C-870°C) and complies with AWS A5.31 Class FB3 A, AMS 3410, Federal Specification O-F-499 Type B, and EN 1045 Type FH10.