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June 2009

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Subject:
From:
Gary Camac <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Gary Camac <[log in to unmask]>
Date:
Fri, 5 Jun 2009 11:01:21 -0500
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I have some core solder at home that is 40 years old and it still
solders fine. 


Gary Camac
Senior Manufacturing Engineer
DICKEY-john Corp.
5200 Dickey John Road
Auburn, IL 62616-0010
Telephone 217-438-2288
[log in to unmask]


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kane, Amol (349)
Sent: Friday, June 05, 2009 10:57 AM
To: [log in to unmask]
Subject: Re: [TN] Flux cored wire solder shelf life

I don't....I have solder wire of an even older vintage that still works
fine. It's obviously not out on the floor, but when people start arguing
about whether to use solder wire because its one day past expiry, I show
them this wire as proof. In the end it all boils down to manufacturing
controls, quality audits and customer requirements. We have a policy
(just like everybody else) of strictly following manufacturer's dates,
realistic or otherwise. They can only be over-ridden as an extreme
exception by quality or engineering by filling out associated paperwork
for record keeping 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Friday, June 05, 2009 11:38 AM
To: [log in to unmask]
Subject: [TN] Flux cored wire solder shelf life

Well, we made it to Friday!
 
I'm going ask ya'll a couple of question that I think I know the answer
to, but I want to hear what you think.
 
Right now I'm in the midst of gathering up all my solder dross, expired
solder paste, and wire solder for a shipment to my recyclers. I noticed
we had a bunch of wire solder in the locker of our training room that
was really old, like it was manufactured back in February of 1997. The
alloy is 63/37, the flux core is a pretty active water soluble organic
acid.
 
The manufacturer says that shelf life for flux cored wire solder is
3-years. But when I took some of the solder and soldered with it, it
soldered absolutely fine. Wet and flowed out with no problems
whatsoever.
 
So my question is, have any of actually had any problems soldering with
flux cored wire solder because it was too old? Do you think that
manufacturers shelf life is realistic?
 
Steve

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