[METRIC]
A-A-2786
March 31, 1992
COMMERCIAL ITEM DESCRIPTION
PRIMER COATING (AEROSOL, LEAD, AND CHROMATE FREE)
This General Services Administration has authorized the use of this commercial item description.
SALIENT CHARACTERISTICS.
The primer shall be furnished in nominal 475 mL (1-pint) commercial pressurized dispensers. The contents shall be dispersible by not more than 60 seconds hand shaking. The valve shall operate with moderate finger pressure and close immediately upon release. The spray shall not sputter and a smooth uniform film shall be deposited. The can shall deliver a minimum 98 percent by weight of contents. The primer shall not contain halogenated solvents nor propellants.
Color. The color of the primer at complete hiding shall approximately match the color specified. (ASTM D 1729).
Flexibility. The topcoated primer (30 minute air dry, baked 24 hours at 95o to 105oC) shall bend over a 1/8 inch mandrel without cracking or flaking. (Method 6221, FED-STD-141).
Lacquer resistance. Primer films topcoated after the primer has dried for periods of 15 min, 8 hours and 48 hours shall show no bleeding, wrinkling or lifting.
Water resistance. Primer films air-dried 48 hours shall show no wrinkling or blistering after 24 hours immersion in distilled water.
Hydrocarbon resistance. Primer films air-dried 48 hours shall show no wrinkling or blistering after 4 hours immersion in hydrocarbon fluid (TT-S-735, Type III) at room temperature.
Salt spray resistance. Primer films air-dried 72 hours, scribed with intersecting lines exposing the substrate and exposed to 1000 hours of 5 percent salt spray shall show no blistering, lifting or substrate corrosion. (B117).
|
Quantitive Requirements |
Limits |
ASTM Test Method |
|
Dry hard, minutes1 |
15 max |
D 1640 |
|
Dry through, hours1 |
2 max |
D 1640 |
|
Solids volume, milliliters |
55 min |
D 2697 |
|
60o specular gloss1 |
6 max |
D 523 |
|
Lead, % of dried film |
0.05 max |
D 3335 |
|
Hexavalent Chromium2 |
None |
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The issues of the referenced test methods in effect on the date of the solicitation shall be used to determine compliance with stated requirements.
Material Safety Data Sheets. Material Safety Data Sheets (MSDS) shall be submitted in accordance with FED-STD-313.
CERTIFICATION. The contractor shall certify that the product offered meets the salient characteristics of this description, and that the product conforms to the producer’s own drawings, standards, and quality assurance practices, and is the same product sold in the commercial marketplace. The Government reserves the right to require proof of such conformance prior to first delivery and thereafter as may be provided for under the provisions of the contract.
PRESERVATION, PACKAGING, PACKING, LABELING AND MARKING. The preservation, packaging, packing, labeling, and marking shall be as specified in the contract or order.
DISTRIBUTION STATEMENT A: Approved for public release; Distribution is unlimited.
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