A-A-50557
no signs of underfilm corrosion. Apply the primer to a hot-rolled steel panel, having an area of at least 24 square inches (155 cm2), prepared for coating by blast cleaning to a nominal 2.0 mil
(51 m) profile in accordance with SSPC-SP 10, using an aluminum oxide grit. Draw down a film using a 0.003 inch (76 m) (approximately 0.006 inch (152 m) gap clearance) film applicator. Allow the coated panel to dry in a horizontal postion for 48 hours at 73 2 F
(22.77 1.11 C) and relative humidity of 80 5 percent. Examine the film for flash rusting, and then remove a portion of the dried primer with a suitable organic solvent and examine for underfilm corrosion.
3.4.8 Humidity resistance. The primer shall resist humidity. There shall be no rust bleed-through and the degree of blistering shall be no greater than size 6 and of medium density as defined in ASTM D 714. Apply one coat of primer and two coats of paint conforming to MIL-P-28578, to
a hot-rolled steel panel, having an area of at least 24 square inches (155 cm2), prepared for coating by blast cleaning to a nominal 2.0 mil (51 m) profile in accordance with SSPC-SP 10, using an aluminum oxide grit. Draw down the coats using a 0.003 inch (76 m) (approximately
0.006 inch (152 m) gap clearance) film applicator. Allow the panel to dry 24 hours between each coat, and cure the finished panel one week before scribing and exposure. Scribe an "x", two inches wide and two inches high, through the coating to the metal, on the lower half of the panel, before exposure testing. Protect the cut edges of the panel with a suitable material stable under the conditions of the test, such as carnauba wax. Test the panel, coated side down, in accordance with ASTM D 2247 for 1000 hours. Examine the exposed panel for compliance.
3.4.9 Salt spray resistance. The degree of blistering shall be no greater than size 6 and of medium density as defined in ASTM D 714, and there shall be no rust creepage more than 1/8 inch (3 mm) from the scribed mark. Prepare the panel as described in 3.4.8. Expose the panel in accordance with ASTM B 117 for 1000 hours.
3.5 Environmental Requirement
3.5.1 Prohibited materials. The manufacturer shall certify that the nonvolatile portion of the primer contains less than 0.06 percent lead and the primer does not contain any chromium, toxic heavy metals, halogenated solvents, benzene, ethylbenzene, xylene (all isomers), 2-ethoxyethanol and 2 methoxyethanol and their corresponding acetates.
3.5.2 voC content. The voC content shall not exceed 2.08 lbs/gal (250 g/L). Test in accordance with ASTM D 3960. The voC shall be determined on the primer as applied in accordance with the manufacturer's instructions for use.
4. REGULAToRY REQUIREMENTS.
4.1 Materials. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). Unless otherwise specified herein, all equipment, material, and articles incorporated in the work covered by this commercial item description are to be new. They are to be fabricated using materials produced from recovered materials to the maximum extent possible without
jeopardizing the intended use. The term "recovered materials" means materials which have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as
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