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February 2002

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Subject:
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 13 Feb 2002 09:33:41 +0200
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I didn't realise that cored solder had a sell-by or best-before date. I
found a reel of RA-flux cored solder that was at least 25 years old, a
few months ago. Other than the fact that the metal was somewhat
matte-looking, it looked OK, smelled OK and worked perfectly. I'm also
using at home a 10-year old reel of 1.5% (less than normal) rosin-cored
to DIN F-SW32 (halogen-free) and it works OK, within the limitations of
its characteristics.

I guess that if it tins some lightly tarnished copper with a soldering
iron at 300°C (which both above did/do), then you can use it!

Brian

> "Ochenas, Tom" wrote:
>
> Does anyone know of a method/standard for requalifying expired flux
> core solder wire (62/36/2)?
>
> The simpler the better...
>
> Thanks In Advance,
>
> Tom Ochenas
> Process Engineering
> Maxtek Components Corporation

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