You can purchase brazing rods with varying of silver content and either flux coated or un coated rod.
Tig brazing copper to stainless steel.
But because of its low melt point silicon bronze tig brazing works better on galvanized sheet than welding with mild steel rods.
But will also cost more and requires the use of an acetylene or mapp gas torch to melt the brazing rod.
Clean and flux the area to be silver brazed.
Silicon bronze will join carbon steel copper bronze brass cast iron pretty much any of these to any other.
Thats a good indication that brazing material flowed where it was needed.
All i had on that day was a cutting torch but it allowed for a soft enough flame to get the job done.
Here are basic tips for silver brazing copper to steel or stainless steel.
Brazing copper to stainless steel.
Https goo gl frdnss why would you weld copper pipes versus soldering copper pipes pizzawelder well p.
But remember its not as strong as a weld.
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The filler material flows into any and all microscopic crevices in the metal and pulls the pieces together similar to a permanent velcro.
The best option for welding steel to copper is actually a brazing technique since the melting points of steel and silicon bronze the required filler metal are so disparate.
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Because of this you don t need the base metals to be similar so it s possible to tig braze copper to stainless steel as an example.
Brazing is done at lower temperatures without melting the base metals.
Brazing copper will provide a stronger bond because of the high of silver in the brazing rod.
Cryogenic pumps and housings.
How to braze stainless steel to copper.