MIL-STD-163 Steel Mill Products Preparation For Shipment And Storage (S/S By Astm-A700)This CID covers a water borne, cathodic epoxy electrodeposition primer (herein after referred to as primer) intended for use on cleaned and pretreated steel, galvanized steel, and aluminum. The primer meets solvent emission maximums of 1.2 pounds per gallon (lbs/gal) (143.8 grams per liter (g/L)) of volatile organic compounds.

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A-A-52474B

2.2.3 Characteristics. The following characteristics (tolerance ranges) of the resin feed and pigment paste components shall be established by the manufacturer at the time of initial process approval (see 4.3):

a. Total solids, percent by weight.

b. Weight per gallon.

c. pH range.

d. Viscosity, centipoise-second.

e. Epoxy resin content.

2.3 Mixed primer. The following characteristics (tolerance ranges) of the mixed primer shall be established by the manufacturer at the time of initial process approval (see 4.3):

a. Total solids, percent by weight.

b. Pigment/binder content.

c. pH range.

d. Conductivity, micromhos.

e. Volatile organic compounds (VOC), lbs/gal (g/L).

f. Lead content (see 2.4).

g. Cure time and temperature.

h. Dry film thickness.

i. Viscosity.

2.4 Hazardous material control. Products and processes used by suppliers shall conform to the employee and consumer health, employee safety, and environmental regulations as specified by the Occupational Safety and Health Administration (OSHA) (40 Code of Federal Regulation (CFR) Part 1910) and Environmental Protection Agency (EPA) (40 CFR Parts 261 to 265).

2.5 Color. The color of the primer shall be characteristic of titanium dioxide pigments, a grey or black. Representative FED-STD-595 color numbers include but are not limited to the range: from white (27925) to black (27030) including those that are grey (like 26493) with a 60° gloss range of 30 to 85 in accordance with ASTM D523.

2.6 Performance. Unless otherwise specified, the performance of the primer shall be verified with steel and aluminum test panels of the same grades and alloys used in the end item. Sufficient types and quantities of test panels shall be tested to qualify the variety of surface conditions and alloys used in the end item. Test panels shall include the most corrosion prone alloys used in the end item design. Uncoated and galvanized steel panels (hot dip and electrogalvanized shall be separately qualified) shall be pretreated with zinc phosphate. Unless otherwise specified (see 6.2), the zinc phosphate process shall incorporate a crystal modifier or a grain refining accelerator in the phosphating solution, a separate grain refiner as a pretreatment or a grain refiner addition to the cleaner. The aluminum panels shall be treated with a hexavalent chromium-free conversion process or alternate environmentally compliant process acceptable to the procuring activity. The primer shall be applied to a dry film thickness required to meet the