ALUMINUM ALLOY SUBSTRATE FOR MAGNETIC DISK
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United States of America Patent
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Oct 30, 2015
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Oct 31, 2014
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Abstract
An aluminum alloy substrate for a magnetic disk includes 0.5 mass % or more and 24.0 mass % or less of Si, 0.01 mass % or more and 3.00 mass % or less of Fe, and the balance of Al and unavoidable impurities. The aluminum alloy substrate for a magnetic disk includes a smooth plated surface and has high rigidity.
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