Brazing flux and soldering flux are different due to the distinct temperatures and materials involved in each process.
5 Key Differences Explained
1. Temperature Range
Brazing typically occurs at temperatures above 840°F (450°C).
Soldering involves lower temperature processes, usually below 840°F.
2. Filler Metals
Brazing uses filler metals that melt at a higher temperature than those used in soldering.
Soldering uses materials that melt at lower temperatures.
3. Flux Design
Brazing Flux:
Brazing flux is specifically designed to operate at higher temperatures.
It is used to clean the surfaces of metals being joined, facilitating the flow of the brazing filler metal.
Brazing flux chemically reacts with the metal surfaces to remove oxides and other contaminants, ensuring a strong bond.
The flux used in brazing is often more reactive than soldering flux due to the higher temperatures involved.
Soldering Flux:
Soldering flux is formulated to work at lower temperatures.
It also cleans the metal surfaces but is less reactive compared to brazing flux.
The primary role of soldering flux is to prevent oxidation of the surfaces being soldered and to help the solder flow smoothly over the surfaces, ensuring a good electrical and mechanical connection.
4. Application Forms
Both types of flux can be applied in various forms, such as pastes, liquids, powders, or pre-made brazing pastes that mix flux with filler metal powders.
5. Selection Criteria
The selection of flux depends on the base metal and the filler metal used.
For instance, fluxes used in brazing iron or nickel must be carefully chosen to avoid the production of brittle phosphides.
In general, for longer brazing cycles, less active flux is recommended compared to shorter cycles.
Continue exploring, consult our experts
Discover the precision and expertise of KINTEK SOLUTION, where advanced brazing and soldering fluxes are meticulously crafted for superior performance in every join. Our extensive range of formulations, tailored for diverse metal types and temperature requirements, ensures seamless, high-quality connections. Elevate your metal joining projects – choose KINTEK SOLUTION for exceptional flux solutions that never compromise on integrity or efficiency. Learn more and take your manufacturing to new heights today!
