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Page Title:
Table 2-1. P-Type Metal Preservatives. (Cont) |
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 TM 38-260
Table 2-1. P-Type Metal Preservatives. Continued
Specifi-
Grade
Physical Properties
cation no
type or
Flashpoint
Melt or flow
P-No
class
Description
point
Uses
Application
Removal
(min)
(min)
P-19
MIL-C-16173
Grade 4,
Transparent during
100
F
General purpose indoor and
Dipping and
Petroleum
Trans-
protective life of film
(-37.8 )
C
limited outdoor preservation of brushing at room
solvents or vapor
parent,
Solvent- dispersed, am-
corrodible metals, with or
temperature
degreasing
nontacky
ber colored nontacky film
without an overwrap, and
film
where handling, stacking, free
coat Where a transparent
coating is required in addition
to protective qualities, where
there Is no requirement for
miscibility with lubricating oil,
and where ease of removal
with petroleum solvent is
Important.
P-21
MIL-C-16173
Grade 5,
A solvent-dispersed
100
F
Used where fresh or salt
Dipping,
Vapor
Thin film
corrosion preventive com-
(37.8 )
C
water must be displaced from
brushing,
degreasing,
cold
pound which deposits a
corrodible surfaces; for
spraying or
solvents or low
application
thin, easily removable film
protecting Interior surfaces of
exterior surfaces
pressure steam.
low
after evaporation of the
material under cover for
and flushing,
pressure
solvents
limited periods; and for
filling, or slushing
steam
protection of critical bare steel
of interior
remov-
or phosphated surfaces for
surfaces at room
able
extended periods when
temperature
packaged with satisfactory
(40 (4.4 ) or
F
C
barrier materials. Used in lieu
higher).
of grade 3, MlL-C-1 f6173,
where chemical "boil-out"
cannot be used for removal
2-17
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