copper soldering
copper soldering
(OP)
Can I solder (with a regular butane or propane torch) copper and steel?
if so what kinda of flux and solder material is used.
if so what kinda of flux and solder material is used.
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RE: copper soldering
If the mass of steel and copper is too large, no propane torch will heat either enough to melt the solder through the whole joint.
Unlike welding - you can't realistically "buildup" a solder joint if there are even modest sized gaps between the two fittings.
Corrosion going to be a problem? What fluid?
What joint type? Joint shape? Solder strength? - compared to brazing materials, solders are weak.
RE: copper soldering
RE: copper soldering
RE: copper soldering
ht
More info at:
http://www.carbideprocessors.com/brazing.htm
Probably best to use 56% Silver braze alloy and black flux.
Tom
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: copper soldering
If you have to solder steel and copper together, it is advisable to tin the steel first, before attempting to solder the copper to it. A zinc chloride based flux is needed for the steel, and the copper would need to be cleaned with hydrochloric acid, before the addition of zinc chloride. There are some proprietary fluxes like "Stay clean" That contain a small amount of free acid to do this.
http://
You are better off using a soldering iron, than an open torch, but a torch can be used.You can use tin/lead solder or lead free solder for this. Neutralise afterwards with baking soda.Do not use this flux for electrical work.
B.E.