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|  MIL-C-10578D
6.
NOTES
6.1 Intended use. Types I and II materials are suitable for
use as rust removers for ferrous metal parts and as metal
conditioners for ferrous and nonferrous metals prior to
application of paints and/or corrosion preventatives. Very heavy
rust incrustations should be mechanically removed and heavy
grease should be removed by adequate grease solvents or grease
removal methods. Type I material will remove more rust and greas
than type II. Type I material should always be rinsed off with
water but may be wiped off with clean rags prior to painting.
Type III conditioner is intended for use on chromium plated
ferrous surfaces and on those ferrous surfaces which require very
close tolerances. The articles should first have very heavy rust
incrustations mechanically removed and have grease removed by
vapor degreasing. The article is left in the conditioner until
the rust is dissolved or loosened sufficiently to permit easy
removal. It is then removed, rinsed and dried. It is then ready
for further corrosion preventive treatments or for use.
Type IV is similar to type I, except that nonfoaming detergents
are used. It is intended for use in pressurized spray systems at
temperatures up to 150F (66C) after which it is washed off with
water.
Type V material is similar to type I, except that grease
removing solvents are not used and the material is suitable for
use on surfaces from which grease and oil have been previously
removed by solvent or alkali cleaning. It may be used in
immersion tanks at ambient temperatures or at temperatures not
exceed 140F (60C).
6.2
Ordering data.
6.2.1 Acquisition requirements.
Acquisition documents should
specify the following:
a.
Title, number and date of this specification
b.
Type of compound required (see 1.2)
c.
Size of containers (see section 5)
d.
Level of packaging and level of packing (see section 5)
e.
The compound covered by this specification should be
purchased by the pound.
6.3 It is an added advantage to add to the final rinse a small
amount of chromic acid or a mixture of phosphoric and chromic
acids.
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