Welding coppper to stainless?

By Eric Carroll (**)

Date 03-24-2009 03:11

Ive done it with silicone bronze wire. dcen tig. mig may work too if its not to thin.

By ravi theCobra (**)

Date 03-24-2009 17:46

Have you tried the 15 % Silver -Phosphorus -Copper ( Sil - Fos 15 ) applied by TIG ?

That is how we put the copper tubing on to stainless steel for diffusion pumps -

By Lawrence (*****)

Date 03-24-2009 18:24

Robert

Tell us more

Thickness of each part.

intended service etc.

There are many different ways (just as you listed) some are better than others depending on what the intended service of the part is.

By OBEWAN

Date 03-24-2009 18:36

Can't "weld" copper to stainless unless you want to fight severe cracking problems. It can be TIG "braze welded" using silicon bronze commonly called Everdure. We do it all the time here at work and have few if any problems. If you Google it you will find some articles about how it was used to build stills during the prohibition era. Now it is used to build micro breweries.

By Stringer (***)

Date 03-25-2009 00:08

Yes, and Everdur is also called Herculoy, but the Sil Fos as Ravi suggested and Phoson are also doable.

By scrappywelds (***)

Date 03-25-2009 01:06

we always used silver solder at the industrial refrigeration fabrication shop I used to work at, of couse we brazed it.