Home › Forum › Ask A Member › Aluminum brazing › Re: Aluminum brazing
For clarification of terms and materials … I suspect that what is here being referred to as "aluminum brazing" is really the "TV stuff". Now there are many true aluminum brazing alloys out there, however to the best of my knowledge they all require the use of a flux. Fluxes for AL have to be very active, usually fluoride compound based and are not generally available to the "homeowner" market. Many items in industry are furnace brazed using pre-fluxed lower melting point AL alloys. Now the "TV / flea market stuff" is actually a zinc based soldering rod. If you are well practiced and scrupulously clean in your joint preparation AND can manage the heat to just the melting point of the rod a very good and strong joint can be achieved. Be aware however that the resulting filler metal will not be AL, it will be zinc, not matching the AL for color and it will be much harder than the surrounding AL.
Joe B