Aluminum Brazing Flux (Recidues is corrosive) Products Usage: TiBright's aluminum brazing flux is an excellent choice for the low-temperature joining of many aluminum alloys (excluding 5000 series) when using aluminum/silicone brazing rods, or lower temperature filler metals from the zinc/aluminum family. This unique formula contains complex fluoroaluminate salts that begin to melt at less than420 degrees C (788 degrees F), with a highly active range from450Celsius degree(850degrees F) approximately620 degrees C (1148 degrees) Physical description: