TIG brass and m/steel

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Would like to know if it's possible to tig weld brass to m/steel, if yes what's the requirement for gas, gas flow, filler and tungsten type? At the moment I only do brazing for both of these combinations, at times using brass and silver filler rods.
Reply:I wouldn't even consider it. Way dissimilar metals! "SOUTHPAW" A wise person learns from another persons mistakes;A smart person learns from their own mistakes;But, a stupid person.............never learns.
Reply:iv tig and mig alum bronze to steel and stainless or you can silver sod.brass to steel
Reply:To weld these metals, that is to melt them together, is not recommended.  Maybe you can stick these together, for something non-structural like a small sculpture, but the copper in brass will tend to cause cracking when mixed with steel, and the zinc in brass tends to vaporize and cause porosity. You mention brass and silver brazing, which is fine, but you could also consider braze welding.  In braze welding the base metal is not melted, but the braze filler is melted and built up along the joint as a weld bead.  Everdur (silicon bronze) works excellent with TIG.  Hold the everdur down in the joint and run the arc along on the everdur as it melts, don't melt the base metals.Now on the question of gas, gas flow, filler and tungsten type?TIG only uses two inert gasses, Argon and Helium.  Up to 5% hydrogen is sometimes used with Argon for precision autogeneous  welding of stainless steel and nickle alloys.  Because the thermal conductivity of Helium is about 9 times that of argon, it is sometimes used to increase the heat transfer efficiency of the arc, and give a "hotter weld" for a given current level.  Classically, helium is used with DCEN TIG of very thick aluminum for deep penetration.  So the short answer is, use argon.Gas flow is set to provide adequate inert shielding, it really is not going to be much different for whatever you weld.  Big hot welds, and very critical oxygen/nitrogen damaged materials such as titanium may require higher flow rates along with larger gas lenses and cups.Filler, try everdur.Tungsten type does not need to be changed for welding different material.  You can us lanthanated, ceriated, or thoriated for everything, AC and DC.   You've probably read this recent thread:  http://weldingweb.com/vbb/showthread.php?t=36054Just forget about ever using pure tungsten (green), it has the lowest melting point and no alloy to help with arc starting and arc stability.You didn't raise this question, but just in case you wonder, the size of the tungsten electrode you need is largely a function of how many amps you plan to run.  Hotter = larger diameter.But you do know, only use Blue welding machines for welding steel, red for aluminum, and yellow for stainless.
Reply:Silicon Bronze for sure....I've also used a few Silver Solder's that worked pretty good as well.  Silicon Bronze is still the best IMO.  You can join just about anything together with the proper Tungsten and good clean metal, using SB.  I've got a few pounds of 'BARE, Low Fume Bronze' of different types and was thinking that I might have a go at that stuff to see how it 'Joins' some of the metals you mentioned.Cheers,/Jman..Miller Diversion 165120 amp Buzz BoxVictor Oxy/Ace Oxy/LPGSmith "Little" Oxy/LPGHypertherm Powermax 30Lot's of Misc. tools n' crap....
Reply:Everdur (silicon bronze) works excellent with TIG. Hold the everdur down in the joint and run the arc along on the everdur as it melts, don't melt the base metals.