Ron,
Reading from Mil-G-45204C, (cancelled 7 April 1998) this is
electrodeposited, 99.0 percent gold, minimum, knoop hardness 130-200.  A
nickel underplate of greater than 10 microinches would be required per para.
6.3 depending on the basis material. Para. 3.4 requires the strike and
underplating to be .001 inch minus the specified thickness of the gold
plating if the basis metal is low alloy steel or other non-copper base
metal.
You should consider using AMS 2422 and/or ASTM B488 as a replacement
specification.

R. G. Blomberg
Honeywell
Staff Production Engineer
(727) 539-5534


-----Original Message-----
From: TPE Engineering TechNet [mailto:[log in to unmask]]
Sent: Friday, August 27, 1999 1:50 PM
To: [log in to unmask]
Subject: [TN] Mil-G-45204


I have a drawing that requires keypads to be plated with
gold. This drawing references MIL-G-45204, type 2, grade C
class 00. What type of gold is this? Electrolytic, immersion
or electroless. How much nickel is required to be plated
under this gold? Any help I can get on this would be
appreciated.
Thanks,
Ron Hayashi
Toppan Electronics
1-858-695-2222, ext. 243
[log in to unmask]

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