MIL-PRF-23236D
3.9.2 Class 7 (seawater only). When tested as specified in 4.5.2.2, the total coating system shall show no
pinhole rusting or loss of adhesion, either between coats or to the substrate. There shall be no blisters rated in excess
of ASTM D714, blister size number 4, Few. There shall be no surface imperfections (including peeling) larger than
1.5 millimeters (0.0625 inch) and any blisters shall be unbroken. Type VII coating system shall have no edge
rusting. Blisters and surface imperfections smaller than 1.5 millimeters (0.0625 inch), which do not increase in size
after the tenth cycle and are not greater than 3 percent of the test panel surface area, shall not be considered failure.
At completion of the test, adhesion of the recoat to the original coating shall be at least 50 percent of that of the
original coating area of the test panel to itself. Physical damage caused by handling shall be identified and may be
ignored in the post-test condition evaluation. For coating systems evaluated in Cycle B of 4.5.2.2.2, a "B1" rating
must be achieved to meet this requirement.
3.10 Condition in container (all types except VIII and VIIIa, all classes, all grades). When tested in accordance
with table V, each individual coating component shall be usable; that is, shall be readily broken up with a paddle or
mechanical stirring to a smooth uniform consistency, and shall not liver or show any other objectionable properties
for at least 1 year. Coating shall apply satisfactorily when applied as specified in manufacturer's data sheet (see
table V).
3.10.1 Accelerated storage stability. When mixed and tested as specified in 4.5.1.2, components shall meet the
table IV characteristics submitted for consistency, fineness of grind, and condition in container. Mixed paints from
these components shall be allowed a consistency increase of not more than 10 percent when tested in accordance
with ASTM D562. When tested as specified in table V, mixed paints shall meet the requirements for dry time, pot
life, sag resistance, gloss, and application characteristics (see 3.8).
3.10.2 Condition in container (Types VIII and VIIIa). Types VIII and VIIIa powders shall meet all applicable
specification requirements when stored in original unopened containers at or below 72 F (22 C) and less than 50
percent relative humidity for a period of 1 year from date of manufacture.
3.11 Toxicity (all types, all classes, all grades). The materials used in the coating systems, unless specific
material maximum levels are cited herein (see 3.2), shall have no known carcinogenic materials as identified by
OSHA, the latest IARC monographs, the latest NTP report, or ACGIH. The materials used in the coating systems
shall have no extremely hazardous substances (EHS) or toxic chemicals as identified in 40 CFR 355 and 40 CFR
372. The manufacturer is responsible for maintaining carcinogenic-free materials. The individual coatings shall not
contain chlorinated solvents, coal tar, or coal tar derivatives (see 6.2 and 6.4) in excess of 0.06 percent by weight of
the wet coating. The manufacturer shall not, unless specific material maximum levels are cited herein, allow the
addition of any prohibited materials to the formulation. If any of these prohibited materials are present as a result of
trace or impurity in another ingredient(s), the concentration shall not equal or exceed 0.1 percent by weight of any
individual coating of the coating system. The coating components and mixed coating shall have no adverse effect
on the health of personnel when used for its intended purpose in accordance with the manufacturer's instructions.
Questions pertinent to this toxicity requirement shall be referred by contracting activity to the qualifying activity.
The qualifying activity will act as advisor to the contracting activity. The qualifying activity will arrange for review
of questions by the appropriate departmental medical service.
3.12 Identification characteristics (all types, all classes, all grades). Values for identification (ID)
characteristics shall be those established for the product at the time submitted for qualification testing (see table IV).
The purpose of these values is to serve as a basis for determining that the material being offered is essentially the
same as that which was approved under qualification testing. Identification characteristics for Grade A and B
materials shall be at the low end of their respective temperature range (see 1.2.3). The qualification testing for all
types, classes, and grades shall be conducted at the low temperature in the range. Manufacturer shall provide ASTM
method(s), FED-STD-141 methods, other consensus standards, or a copy of unique test methodology and/or any
other necessary information on methodology used to determine reported ID characteristics.
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