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Shall consist of new, clean, uncoated and unpainted
aluminum scrap of one specified aluminum alloy with a
minimum thickness of .015" (.38 mm) and to be free of
hair wire, wire screen, dirt and other non-metallic
items.
Oil and grease not to total more than 1%. Also
free from punchings less than 1/2" (1.27 cm) in size.
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