Hi everyone,

This is my second attempt to get any suggestions on my
solderability query, someone please answer me as I am
getting lonely!

My query is as follows:

I want to solder to a firewall hermetic connector that has
#24/20 solderwells that are plated with 5 microns of Gold
over both Alumel and Chromel using 5S HMP solder, cored
with 2% "no clean" flux.

The environment they will be used in will typically see
temperatures in the range of -55 to +270 degrees C.

If I do not remove the Gold prior to soldering will this cause
me embrittlement problems?

Thanks in advance

Pat Diamond
Weston Aerospace

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