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Old 03-10-2017, 03:31 PM   #11
frodo
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yes, you can solder stainless steel and copper all you need is the correct flux

I have soldered SS to SS and copper to SS




Quote:
Originally Posted by Matt30 View Post
You can solder copper to brass without issues. You cannot solder stainless steel. If you are worried about open flame, get yourself a heat shield of some sort. Ditch the heat gun idea, trust me. Its going to be way harder.
yes,


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Old 03-10-2017, 04:28 PM   #12
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I was hoping you wod chime in on this one. Can you list the right Flux or where to get the stuff. I saved a pic you had posted one time. I'm just wondering it is the same stuff.


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Old 03-10-2017, 04:47 PM   #13
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Quote:
Originally Posted by plumb_bob_square_pants View Post
I was hoping you wod chime in on this one. Can you list the right Flux or where to get the stuff. I saved a pic you had posted one time. I'm just wondering it is the same stuff.
sta clean liquid flux by harris

I get it at a welding supply house where i get my b tank refilled

https://www.amazon.com/Harris-SCLF4-...flux+by+harris


you just have to remember the 2 metals heat sync at different temps

get your flame off the ss and on the copper after you preheat.

and i have found that if you pre-tin your work, it works out a lot better
the stainless does not seem to ''wick'' the solder like copper
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Old 03-10-2017, 05:14 PM   #14
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Quote:
Originally Posted by Nehmo View Post
Pre-Soldered Fittings use an alloy of solder that melts at a lower temperature than standard solder. ].
And there is the problem, we as licensed plumbers are required by code

solder or fluxes with a lead content which exceeds 2/10 [0.20] of 1 percent shall be prohibited in piping systems used to convey potable water

if it is a lower melting point then the lead percentage is going to be to high

Oatey Silver Lead Free and Safe-FloŽ Solder

melting point 415 degrees f - 455 f
tin 60-100 %
bismuth 1-5 %
copper 1-5 %
silver 1-5 %

Oatey 95-5 lead free
450 degrees f- 465 f
tin 60-100 %
antimony 3-7 %


in my opinion, all these neat tricks work great in a vice, in a closed environment
now, jump down in this ditch with the wind blowing
or maybe a sprinkle or 2

we work in the weather, very very very rarely do we ever get a chance to solder a pipe in pristine conditions as a lab setting
hell man, most of the buildings do not have windows yet !!!!!!!!!!!
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Old 03-17-2017, 02:26 PM   #15
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How about in the crawl space under a house , where there is barely enough space to get my old , fat behind / gut ?

As an aside question , is tin / lead solder legal on things like automotive radiators ? Hot water heating systems ?

God bless
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Old 10-16-2017, 10:29 AM   #16
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you can solder brass to copper no problem.stainless steel you cannot solder
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Old 10-17-2017, 05:15 PM   #17
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Quote:
Originally Posted by manju123 View Post
you can solder brass to copper no problem.stainless steel you cannot solder
oh contraire mon frčre

yes you can, been there done that


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