Uniweld Aluma-Braze™, all in-one flux cored aluminum brazing alloy. Cadmium free zinc-aluminum brazing filler metal. Flux inner core means no manual flux application is required. Low temperature self-fluxing alloy ideal for brazing aluminum to aluminum or aluminum to copper. Applications include HVAC and Refrigeration repairs, patching holes in aluminum coils and brazing a copper to aluminum transition fitting.