TIG Brass and Copper

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I am going to be welding a brass threaded coupling to a copper scupper.  Any suggestions of how to attack this.
Reply:Solder or braze it with a torch and the appropriate flux and filler metal.  If you TIG weld it you'll heat the brass up enough to cause the zinc in the alloy to vaporize.  This will make for a nasty weld, zinc fumes which could make you ill, and could compromise the strength of the brass fitting.Benson's Mobile Welding - Dayton, OH metro area - AWS Certified Welding Inspector
Reply:It needs to be welded and looks arent too important as the fitting will be hidden.  Also the strength isnt a huge concern. It is a small fill line for a water fountain with not much pressure.
Reply:Just curious, why does it "need" to be welded if strength/looks isn't a huge concern? I'd think brazing would be just fine.The soldering toys pay for the welding toys.Hakko 928 dual iron, 4xHakko 936Madell 850D Hot Air SMT ReworkMiller 252, HTP Invertig 201 AC/DC, and a Hypertherm 45.
Reply:If you TIG weld it you'll heat the brass up enough to cause the zinc in the alloy to vaporize. This will make for a nasty weld, zinc fumes which could make you ill, and could compromise the strength of the brass fitting.
Reply:I dont understand? why not take some pride in your work and take the time to do it correctly and make a structurally sound braze connection thats also pleasing to the eye? noone else will know its there but you will. Everytime i do a pressure weld i always pretend the boiler inspector is looking over my shoulder, it only makes you a better welder.
Reply:I agree, why must it be welded?  Sometimes there are better ways to do things...  braze or solder it...Esab TradeMaster TorchSmith AW1A Airline TorchLincoln AC/DC 225/125Millermatic 252 w/ Spoolmatic 15aThermal Arc 190 GTSSpeedGlas 9100v
Reply:Originally Posted by wipmechIt needs to be welded and looks arent too important as the fitting will be hidden.  Also the strength isnt a huge concern. It is a small fill line for a water fountain with not much pressure.
Reply:Pop always silver soldered those connections.  That's what I would do.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:What about a the rod Phos Copper 0 which is made for welding copper and or brass?
Reply:That would be my first choice, but its NOT a welding rod, and people on a welding forum get persnickety about that sort of terminology.Yes, phos-copper would be your best color match, and should work well.  It doesn't need flux for copper, but flux can help it on brass.
Reply:Originally Posted by rlitmanThat would be my first choice, but its NOT a welding rod, and people on a welding forum get persnickety about that sort of terminology.Yes, phos-copper would be your best color match, and should work well.  It doesn't need flux for copper, but flux can help it on brass.
Reply:I "Tig Braze" stuff like this all the time with a silicon bronze filler rod.Technically, you are brazing, because you try not to melt the brass. Silly bronze will stick well to both. Its quick and easy, but depending on the alloy of brass, it might not be quite as good looking as silver solder.