Can nichrome be soldered?
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Posted by Ecnerwal on June 30, 2008, 10:00 am
Please log in for more thread options The main issue with soldering any form of stainless (including nichrome) is physically removing as much oxide as possible, and using an adequate flux for further chemical oxide removal, whether for soldering or brazing. A fast-forming resistant oxide layer is what makes stainless stainless. You can certainly solder stainless with ordinary tin/lead solder (I've done a lot of that) but it takes a very aggressive flux (rosin won't generally do it.) These aggressive acid fluxes need to be washed off when the work is done. When dealing with nichrome, specifically, one tends to assume that heating is intended, and that certainly would make braze the better choice - though you might want to consider a purely mechanical connection, too. Those require periodic cleaning and re-tightening, but don't generally melt and disconnect. -- Cats, coffee, chocolate...vices to live by | |||||||||||||||||||||||||
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Posted by Chris on July 6, 2008, 12:20 pm
Please log in for more thread options > >> Ordinary silver solder will bond to both metals.
> >> But you have to keep the soldered joint well > >> below the softening temperature of the solder > >> for the joint to last. >
> > Thanks for the the excellent soldering tips. I've used silver solder fo=
r
> > putting together copper pipe. It's a little more expensive than ordinar=
y
> > electronics solder (lead/tin/rosin core), but I'll only need a little
> > for the small wire job I have. >
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> I think I may have misused the term silver solder. =A0I should > have said "silver braze", since I am not talking about a > sliver bearing (i.e. 2% silver) low temperature tin lead > solder (that you can use with a soldering iron), but with a > silver alloy braze that you use with a flux and a torch. =A0I > think the high silver alloys that contain a little nickel > are good at wetting both stainless steel and copper, and > nichrome is really a form of stainless steel. =A0However, > there are a huge number of silver braze alloys available, > and not all are suitable for joining copper and nichrome. > > http://www.brazing.com/products/Braze_silver/http://www.silvaloy.com/hiag= >
> -- > Regards, > > John Popelish Once you're done brazing a silver coating on the nichrome, it will be wettable for regular solder (if you're soldering wire to a circuit board). Cheers Chris | |||||||||||||||||||||||||
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Posted by whit3rd on July 5, 2008, 12:34 am
Please log in for more thread options On Jun 29, 6:19=A0pm, ins...@webtv.net (C. Nick Kruzer) wrote:
> Can nichrome be soldered to nichrome?
> Can nichrome be soldered to copper? Nichrome spotwelds quite nicely. Copper won't take high temperatures well (if this joint gets hot, the copper will turn to black crumbly oxide). I've done silver solder, too, you can get 'easy silver solder' and appropriate flux at any jewelry art supplies market. Soft solder, though, will only work if you use acid fluxes on the nichrome (like, Dunton's stainless steel flux). | |||||||||||||||||||||||||
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> =A0> John Popelish wrote:
> (snip)
>