MIL-PRF-85322C
3.
REQUIREMENTS
3.1 Qualification. The coatings furnished under this specification shall be products that are
authorized by the qualifying activity for listing on the applicable qualified products list (QPL) in
the qualified products database (QPD) before contract award (see 4.3 and 6.3).
3.1.1 Formulation. Any change in the formulation of a qualified product shall necessitate
its requalification.
3.1.2 Supplied coatings. The coatings supplied to this specification shall be identical,
within manufacturing tolerances, to the product that was authorized for qualification.
3.2 Material. Materials used to manufacture these coatings are not limited, provided that the
resulting coatings meet the requirements of this specification.
3.3 Toxicity. The coatings shall have no adverse effect on the health of personnel when
used for its intended purpose and with the precautions listed in 3.10.1 through 3.10.3, when
evaluated in accordance with 4.7 (see 6.8).
3.4 Composition. The coating kit shall be supplied such that the admixed coating consists of
the minimum volume specified by the procuring activity (see 6.2). The volume mixing ratio
shall be as specified by the manufacturer. When tested as specified in 4.6, no component of the
coating shall contain cadmium, cadmium compounds, or more than 0.05 percent by weight of
lead metal or lead compounds, and the coating shall not contain hexavalent chromium.
3.4.1 Type I, Class A and B, Grade A. The rain-erosion coating shall be a two or three-
component system that is not dependent on moisture or high humidity for curing, consisting of
Component A, a polyurethane elastomeric base component, Component B, a ketimine or other
amine type curing agent, and Component C, a thinner (if applicable). They shall be mixed in the
ratio specified by the manufacturer.
3.4.2 Type II, Class A and B, Grade A. The rain-erosion coating shall be a two or three-
component system that is dependent on moisture or high humidity for curing, consisting of
Component A, a polyurethane elastomeric base component, Component B, a curing agent, and
Component C, a thinner (if applicable). They shall be mixed in the ratio specified by the
manufacturer.
3.4.3 Type I and II, Class A and B, Grade B. The Type I rain-erosion coatings shall be a
two or three-component system that is not dependent on moisture or high humidity for curing,
consisting of Component A, typically a polyurethane elastomeric base component, and
Component B, a ketimine or other amine type curing agent. The Type II rain-erosion coating
shall be a two or three-component system that is dependent on moisture or high humidity for
curing, consisting of Component A, typically a polyurethane elastomeric base component, and
Component B, a curing agent and Component C, a thinner (if applicable). They shall be mixed
in the ratio specified by the manufacturer. In addition to the above Types and Classes, an
antistatic coating shall be applied over the rain erosion coating. Typically antistatic coatings
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