weld titanium to steel

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On one of the car forums that I go to a poster said that a welder that he knows who does aerospace welding says that he can weld titanium to steel.  Is there a process to do this that I am not aware of?
Reply:Way do it
Reply:He was wanting to build a custom car with a chrome molly tube frame skinned with titanium panels.  I told him he couldn't weld them on but he said he knew a welder who said he could do it.  I have never heard of a process that would allow welding titanium to steel.
Reply:Fusion welding?  Nope.Maybe, just maybe, you can bond steel to titanium via a 'solid-bonding' process such as friction-stir welding or explosive bonding.But why?  Just weld some steel mounting tabs to the steel frame and attach the body panels to said mounting tabs.  Use screws, glue, VHB tape, JB-Weld, whatever.     The best laid schemes ... Gang oft agley ...
Reply:I had a customer ask me to weld some titanium hoops over his camshafts on the head of his race car years ago. He said that the racing circuit required the titanium hoops to control the camshafts incase of some sort of failure so they wouldn't fly off the head or something. The head was cast iron. I did not believe him and thought he was full of it. Curious if it was possible to join the titanium to the cast head I did eventually find that it was possible by buttering up several layers of differening alloys to eventually get to the titanium. I believe it was 7 different alloys total. however the weak link was still the weakest layer or the original cast head. I didn't know much about this back then so I may have even gotten mixed up and it may not be possible at all. Regardless it he wants it joined the glue would probably be best. Why titanium panels? Carbon fiber would be much easier and most likely alot stiffer.Millermatic 252Lincoln 175 plusTA 185tswTA 161stlhypertherm pmax 45Victor torchHenrob torchAn S10 for each day of the week
Reply:I'm not sure this guy really know what he wants or what he is talking about.  He wants to build a "super car" and I think using titanium sounds exotic.
Reply:It will braze or silver solder. If he wants to pay for it.
Reply:+1 on the carbon fiber panels, definitely a good idea, and not all that hard to fabricate.~Justin Manufacturing EngineerWWU Vehicle Research Institute c/o 2010
Reply:If you buy a kit car, with everything more or less engineered for you, and you build it with quality parts and put a nice paint job on it, you will have $40,000+ invested by the time you are done.  And the prices go up from there.So this guy says he wants to build an exotic? Maybe for $400,000 he could do it.  Or, he could buy something that is 10x as reliable, just as fast, and probably more fun to drive for 1/3 the price.That being said, I have welded stainless to copper.  The copper melted away and the stainless sorta swirled into the copper.  Hit it with a grinder and it looked all blended together.  This wasn't structural but it was strong enough for an electrical connection.As for exotic cars.  F1 cars are carbon fiber (and other 'space age' products).  They don't have a steel frame and then some skin, they have a carbon fiber tube and add bits like suspension.FYI:http://www.allpar.com/cars/adopted/consulier-gtp.htmlCon Fuse!Miller Dynasty 350Millermatic 350P-Spoolmatic 30AMiller Multimatic 200Hypertherm PowerMax 1000G3Miller Maxstar 200DX