Usually a sacrificial gold is the final finish over the nickel. The fluxes used to solder to nickel are unique. IMHO, no-cleans; not allowed.
Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Glidden, Kevin
Sent: Thursday, August 29, 2013 12:01 PM
To: [log in to unmask]
Subject: Re: [TN] Solder joint failure

In my experience nickel is NOT easy to solder to at all.


-----Original Message-----
From: Victor Hernandez [mailto:[log in to unmask]]
Sent: Thursday, August 29, 2013 2:53 PM
To: [log in to unmask]
Subject: [TN] Solder joint failure

Fellow TechNetters:

   Should I be concern with an electroless matted nickel plating over an aluminum sheet metal surface and solder onto a copper heat tube?   I recall something about directly soldering onto a nickel surface.  Beside nickel oxidation.    Any suggestions would be greatly appreciated.

Victor,

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