To add to what Mel said:  the reason for the disallowance had to do with the
susceptibility for "red plague" formation.
This is not to imply that I've been around longer than Mel, it was well
before my time but my mind is full of "usually nonimportant" trivial things
that at times prove to be useful!

Steve Sauer
Mfg Engineer
Northrop Grumman, Xetron

-----Original Message-----
From: Mel Parrish [mailto:[log in to unmask]]
Sent: Friday, April 19, 2002 10:16 AM
To: [log in to unmask]
Subject: Re: [TN] Silver

The content of 610 regarding silver plate wire is one of those dinosaurs
that is left over from the 70s and that originated in the very early Mil
Specs or maybe even NHB. You will not even find a reference in MIL-STD-2000
to restrict silver.
Contract documents and BOM commonly reference silver wire for production and
the justification as I recall was improved shelf life and solderability.
Additionally silver plate wire achieved preferred performance in
solderability testing after steam aging required under 202.
I'm sure there was a justification originally for the restriction but it was
before my time and that is saying sumpin.

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