Hello everyone,

This is my first time on the forum so be gentle with me.

I wish to solder to a firewall hermetic connector with #24/20
solderwells that are plated with 5 microns of Gold over
both Alumel & Chromel using a 5s HMP solder, cored with
2% "No Clean" flux.

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

My questions are:

1.  Is the process feasible?

2.  Will non-removal of the Gold prior to soldering cause
     embrittlement?

Regards,

Pat Diamond
Weston Aerospace

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