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Subject:	Re: [External] [TN] what is std finishing of ferrous metal leads for soldering
From:	David Hillman <[log in to unmask]>
Reply To:	TechNet E-Mail Forum <[log in to unmask]>, David Hillman <[log in to unmask]>
Date:	Thu, 27 Aug 2020 10:38:22 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (19 lines)

Hi Joyce - the underplating is typically nickel.

Dave Hillman
Collins Aerospace

On Thu, Aug 27, 2020 at 10:20 AM Yuan-chia Joyce Koo <[log in to unmask]>
wrote:

> Gurus,
> what is the std plating surface finishing  of ferrous metal
> components leads?  Cu or Ni underlying layer (thickness X-micron)
> with solderable surface for lead free? (98% Tin for example, assume
> flash gold is too expansive  - >2000 per oz, shish).  Anything in the
> field  that is new?  Is standard change from MIL to ASTM  for the
> plating?  Many thanks.
> regards,
> jk
>

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