Soldering to Inconel 600 Alloy

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Customer has tried OA and NC alloy solder pads may be nickel... - Dec 20, 2004 by

Bare inconel is NOT ment to take solder, because * Nickel d... - Dec 20, 2004 by davef

We used to use Cobar paste on Nickel - very aggressive. ... - Dec 21, 2004 by Rob

Where can I find this Cobar paste? is Cobar a manufacturer? ... - Dec 21, 2004 by

Hi Steve, Info & distributors at ... - Dec 21, 2004 by Rob

Hi Steve, Sorry it was S62-325XM3 - must be the lead fume... - Dec 22, 2004 by Rob

Thanks for all your help. Happy Holidays ... - Dec 23, 2004 by

steve

#31798

Soldering to Inconel 600 Alloy | 20 December, 2004

Customer has tried OA and NC alloy solder pads may be nickel Chromium. Non-wetting issue. Scraping pad alloys a bit of adhesion of solder but no intermettalic bond. Any suggestions?

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davef

#31800

Soldering to Inconel 600 Alloy | 20 December, 2004

Bare inconel is NOT ment to take solder, because * Nickel develops a tenacious oxide layer that is very difficult to remove since the nature of the oxide is very dense, coherent, etc. * Chromium is difficult to solder. * Iron is difficult to solder.

Nickel will form intermetallics when soldered, providing either: * Surface is protected from corrosion. Commonly, a precious metal [eg, Pd, Ag, Au, etc] plating provides this protection, but copper is used in some applications ... OR * Surface oxidation is removed just prior to soldering. The fluxes your customer is using are inadequate. Check with your flux supplier for recommendations.

It's possible that scrapping the metal surface prior to soldering exposes non-oxidized metal that can take solder.

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Rob

#31803

Soldering to Inconel 600 Alloy | 21 December, 2004

We used to use Cobar paste on Nickel - very aggressive.

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steve

#31805

Soldering to Inconel 600 Alloy | 21 December, 2004

Where can I find this Cobar paste? is Cobar a manufacturer? What exactly is this?

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