Many thx. jk On Aug 27, 2020, at 11:38 AM, David Hillman wrote: > 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 >>