MIL-DTL-53072E
TABLE II. General application guidelines for epoxy primers. - Continued
Reduce, if
Dry times and recoat
A-A-59745
Mix and agitate pigmented
necessary, by
times based upon
component thoroughly.
manufacturers'
manufacturers'
Mix as specified by the
specifications.
specifications. Protect
manufacturer. Preferred
Set 30 minutes
moisture cure from
temperature range 60 to
before use for
90 oF (16 to 32 ºC) prior to
moisture for extended
epoxy type.
potlife. Epoxy type use
mixing.
within 4-6 hours. DFT:
2.5-3.5 dry mils. The use
of an agitator pressure
pot is recommended.
Use deionized
MIL-PRF-85582
Thoroughly mix
Spray with one full coat.
water. Stir and
component A. Slowly add
Wait 30-60 minutes prior
strain. Set 30
component B to
to topcoating or based
minutes before
upon manufacturers'
component A as specified
use.
recommendations. Use
by the manufacturer.
within 4 hours. DFT:
Preferred temperature
0.8-1.2 mils.3/ Apply at
range 60 to 90 oF (16 to 32
60-100 oF (16-38 oC).
ºC) prior to mixing.
High humidity retards
dry, low humidity
accelerates dry. Make
sure surface is free of
water prior to topcoating.
1/ Always add component B to component A, never in reverse.
2/ Time duration prior to topcoating are based on 70 oF (21 oC) ambient temperature. At 60 oF,
doubling the time is necessary to get adequate curing for topcoating.
3/ DFT for aluminum-steel assemblies. If aluminum only, 0.6 - 0.9 mil DFT is acceptable.
TERMS: 1 mil = 25 microns.
3.4.1 MIL-PRF-23377 (Primer Coatings: Epoxy, High-Solids).
3.4.1.1 Description. This specification covers the requirements for corrosion inhibiting, chemical
and solvent resistant, solvent-borne, epoxy primer coatings that have a maximum volatile organic
compound (VOC) content of 340 grams/liter (g/l) (2.8 pounds/gallon (lbs/gal)). The specification
contains formulations that allow for standard pigments (type I) and low infrared reflective
pigments (type II). It also differentiates between two classification systems, class C and class N.
Class C contains either barium chromate or strontium chromate based corrosion inhibitors and
class N contains non-chromate based corrosion inhibitors.
3.4.1.2 Use. This primer is intended for use on pretreated aluminum alloy surfaces as a
corrosion inhibitive, chemical resistant primer. It is compatible with CARC topcoats. Type II
shall not be used as a CARC primer, except on aircraft, and where specifically required (see 6.6).
3.4.1.3 Preparation. Thoroughly mix and stir component A prior to admixing. While slowly
pouring component B into component A, continue to stir until the manufacturer's specified
volume mixing ratio is achieved. Each component shall be properly metered to assure correct
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