> > Ok, what?  The lead doesn't vaporize.  Not at all, at the tempera=
tures
> > we're talking about for correct reflow; it's just barely MELTED, =
and
> > that only because of the alloying with the tin.

For interest.
Formula for vapour pressure of lead with temperature

        http://prola.aps.org/abstract/PR/v26/i6/p851_1

FWIW:

    Vapor pressure of lead, 1118=B0 to 1235=B0C was found to
    vary from 5.70 mm to 19.70 mm in good agreement with
    the equation log 10p(mm)=3D-10372 / T-log 10T-11.35


        RM

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