HIGH ELECTRIC RESISTANCE ALUMINUM ALLOY
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United States of America Patent
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Issued Date -
Nov 21, 2013
app pub date -
Jan 27, 2011
filing date -
Jan 27, 2011
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Abstract
An aluminum alloy casting having high electric resistance, high toughness and high corrosion resistance and optimally usable in manufacturing of electric motor housings, and a method of manufacturing said aluminum alloy casting are provided. The aluminum alloy casting has a composition including Si: 11.0-13.0 mass %, Fe: 0.2-1.0 mass %, Mn: 0.2-2.2 mass %, Mg: 0.7-1.3 mass %, Cr: 0.5-1.3 mass % and Ti: 0.1-0.5 mass %, with the balance consisting of Al and unavoidable impurities, wherein the content of Cu as an unavoidable impurity is limited to 0.2 mass % or less. In some cases, heat treatments such as solution heat treatment or artificial aging hardening treatment are performed after casting.
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