MIL-DTL-14072F
TABLE III. Plated finishes (M) Continued.
5/ Use of nickel or copper/nickel on aluminum for Type I exposures is a questionable
practice. Any porosity in the coating can lead to severe corrosion. Therefore, any
such applications should be carefully weighed and avoided whenever possible.
6/ The aluminum alloys require pretreatment prior to plating. All surfaces shall be
treated in accordance with ASTM B253 or given a sodium carbonate anodize in
accordance with the pretreatment process for aluminum alloys.
TABLE IV. Finishes or processes other than painting or plating (E).
For Use On
Type
Finish
Finish Process
Exposure
Number
Plated ferrous alloys (other than
I or II
E200
1) Prior to cleaning and plating,
corrosion-resistant steel) having
and after forming and
a Rockwell hardness greater
hardening, parts shall be stress-
than C-40.
relieved by baking at 149°C to
260°C for 30 minutes. The
baking temperature employed
will depend on the amount of
residual stress required by the
part.
2) Immediately after plating and
prior to any passivation
treatment, parts shall be baked
at 177°C to 204°C for 5 hours.
Parts shall not be flexed prior to
baking.
NOTE: Parts heat treated at less
than 191°C including carburized
parts shall be treated by a
method having prior approval of
the contracting officer.
Ferrous alloys other than
II
E211
1) Preconditioning not required.
corrosion-resistant steel
(Wearing parts lubricated in
2) Passivate with phosphate
service).
film per MIL-DTL-16232, Type
Z, Class 2.
42
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