Silicon bronze brazing wire? Better for body work?

http://www.jwharris.com/images/pdf2/SIB.pdf

I caught this in another forum . . . anyone have any experience with this? It sounds interesting.

 

we used silicon bronze in the factory (GM) to fill the seam where the roof panel meets the C-pilar. there was a gun that heated up the silicon bronze to nearly liquid and actualy SPRAYED it onto the car. it was a **** job cause you had to wear a "space suit" with fresh air pumped into it via a hose and it was hot as hell in the booth. that and the ***embly line moves at about a hundred and forty miles an hour so your doing it in a big ole hurry as the car is moving past you. man i hated that job...

 

I have only used it with my tig, but to answer your question; Yes it is good for sheet metal. I wouldn't weld up an entire piece with just the silicon bronze. I would tack weld with steel in many different places. The silicon bronze has a tendency to want to crack out. Silicon bronze works great because it flows very easy with low heat. Therefore, you get less warpage, ***uming you still take your time and space your welds apart and allow time for cooling.
Heath

 

Getting paint to stick to it might be a problem.

 

Silicon bronze tends to be very brittle and doesnt get good penatration. Take a couple s****s and braze them together with it, clean it up and grind smooth then try to flex the weld it will more than likely snap off. At my former employer we used it to weld the floor and firewalls in. It would start cracking after about 50 p***es. Its easier to use but not nearly as durable.
It also depends on the thickness of what you are welding. 20 gauge and down I wouldn't even try it.

My 2 cents worth, and if 149 more people give their 2 pennies you can buy enough gas to start your lawnmower!

 

Ok -- cool, it looked interesting from a bodywork perspective . . . I think some people got wind of it from a metal scuplture site . . . I'll p*** along this thread on that board too. I looking to see if it might be better for welding up chrome trim holes on my old Buick . . . but guess I'll just go with MIG and steel wire.

Thanks!

 

We used it with TIG in the tool and die trade to bond disimiliar materials...and it is pretty brittle, as others have said.