MIL-PRF-23236 Coating Systems For Ship StructuresThis specification covers four types of air pollution regulated ship and structure coatings that comply with the National Emission Standards for Hazardous Air Pollutants \(NESHAP\) for shipbuilding for state and federal regulations. There are nine classes of coating systems. There are four grades of coating systems based on temperature of application and cure. In addition to tanks, all paint systems qualified to this specification are suitable for use on any ship structures, interior or exterior, for corrosion control. Except for trace levels, all types are free of lead, chromium, cadmium, and asbestos \(see 3.2.3\). All types have levels of hazardous air pollutants \(HAPs\) that do not exceed applicable NESHAP levels \(see 3.2.2.2\). Dry Type V, VI, VII, and VIII coating residues and debris are non-hazardous waste under U.S. Environmental Protection Agency \(USEPA\) regulations in effect on the date of this specification. Type VII coating will not have any solvent added to either the base resin component or the hardener component.

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MIL-PRF-23236D

TABLE II. Total metals content for Type V, VI, VII, VIII, and VIIIa coatings.

Metal or its compounds in each individual dry paint

Maximum, wt%

Antimony

0.015

Arsenic

0.005

Barium (excluding barite)

0.10

Beryllium

0.0002

Cadmium

0.0005

Chromium (VI) compounds

0.001

Chromium or chromium (III) compounds

0.56

Cobalt

0.005

Copper

0.01

Fluoride salts

0.18

Lead

0.005

Mercury

0.0002

Molybdenum

0.35

Nickel

0.02

Selenium

0.002

Silver

0.001

Tantalum

0.100

Thallium

0.007

Tungsten

0.100

Vanadium

0.01

Zinc

0.25

3.3 Color and gloss (all types except VIII and VIIIa, all classes except 15 and,17, all grades). When tested in

accordance with the procedures of table V, each topcoat of the coating systems shall have a 60-degree specular gloss

of not less than 30 percent. Succeeding coats of the coating system shall be of contrasting color, and the top coat

shall be white or a very light pastel shade. Primer shall be a contrasting color to the bare steel substrate.

3.3.1 Color and gloss (Types VIII and VIIIa). For the as-cured powder coatings to achieve the required

performance of this specification, color and gloss of Type VIII and VIIIa powder coatings shall be within 0.5 Delta

E (E) units of the following FED-STD-595 color numbers; 60-degree specular gloss shall be as indicated below in

table III.