Flux is a chemical product essential for use in both soldering and brazing processes to ensure strong and reliable metal joints. Flux is used to remove metal oxides before soldering/brazing and to prevent further oxidation during heating, enabling the solder to flow smoothly and adhere effectively. Flux is available in various chemical compositions and forms (paste, liquid, and powder), making it versatile and adaptable to specific metals, processes, and applications. These properties make flux an indispensable part of the soldering and brazing process, ensuring clean and efficient results.

To achieve effective soldering/brazing results, choosing the right flux is crucial. As a rule of thumb, the flux should be fully active 50°C below the solidus temperature of the brazing alloy and have an active temperature range that extends to at least 50°C above the liquidus temperature of the brazing alloy.

Note: None of the flux products supplied by Metalli contain PFAS (per- and polyfluoroalkyl substances).