On 13 Mar 2015 at 19:41, Mike Fenner wrote:

> Pragmatic answer.
> I don't know if the actual shelf life of electronic grade flux core
> solder wire has been established, or ever will be. Nor bar solder for
> that matter. 

I agree, I use here even some really old stuff from my father's work 
bench.
But there are some strange solder wire types from the early beginning 
of lead-fee era with the flux not as core but larded with flux in 
many fine punch holes. I would assume this flux would be gone or at 
least without any volatile components would be gone after a quite 
short shelf life.

Regards
Matthias

--
Matthias Mansfeld Elektronik * Printed Circuit Board Design and 
Assembly
Neithardtstr. 3, D-85540 Haar, GERMANY
Phone: +49-89-4620 0937, Fax: +49-89-4620 0938
Internet: http://www.mansfeld-elektronik.de
OpenPGP: http://www.mansfeld-elektronik.de/gnupgkey/mansfeld.asc
Fingerprint: 6563 057D E6B8 9105 1CE4 18D0 4056 1F54 8B59 40EF



______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________