Aluminum Flux: Corrosive or Non-corrosive?

Aluminum brazing fluxes are available in corrosive and non-corrosive families. With corrosive fluxes, proper removal of residues after joining is part of the process.

Non-corrosive flux can reduce the need for cleaning after brazing, but its white residue and end-use requirements still need consideration.

Do not select flux by family name alone. Aluminum alloy composition, filler alloy and the thermal or electrical requirements of the component also matter.