Use a torch that produces a high intensity flame.
Braze steel to copper.
The joint will only be as strong as the silver solder itself.
How to braze stainless steel to copper.
I use oxi acetylene torch and use silfox solder.
All i had on that day was a cutting torch but it allowed for a soft enough flame to get the job done.
Trying to brazing a steel to copper connection do i have to use a kind of flux or is correct do it as a copper to copper.
The only drawback can be the relatively high cost of silver base filler metal but that may be offset by the low cost of equipment.
But you can attach copper to steel with silver solder using a propane torch and call it whatever you like.
How to braze copper to steel with silver solder.
As such the filler metals for soldering and brazing copper and copper alloy tube and fittings must have melting temperatures below this temperature.
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The brazing rod should be melted by the heat of the metal pieces being joined not by direct contact with the flame of the torch.
Copper phosphorous brazing welding rods.
Recommended rods by metal type.
You can silver solder stainless to itself or to brass or copper to make easier connections without risk of corrosion problems.
Generally welding holds stainless steel parts together best.
Thats a good indication that brazing material flowed where it was needed.
The basic difference between soldering and brazing is the temperature necessary to melt the filler metal.
Technically you can either braze or solder though you cannot braze with solder or solder with brazing rods.
The melting point of copper cu alloy uns c12200 is 1 981 f 1082 c.
Updated april 24 2017.
Brazing copper will provide a stronger bond because of the high of silver in the brazing rod.
Use the right brazing rod material for the metal used in your project.
11 18 2004 03 16 am 2.
Here are basic tips for silver brazing copper to steel or stainless steel.
You can purchase brazing rods with varying of silver content and either flux coated or un coated rod.
The higher the silver content the stronger the bond but the hotter the temperature needed to melt the filler metal.