Al-Zn-Mg-Ag high-strength alloy for aerospace and automotive castings
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United States of America Patent
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Issued Date -
Dec 28, 2006
app pub date -
May 23, 2006
filing date -
May 25, 2005
priority date (Note) -
Abandoned
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Abstract
An aluminum casting alloy comprises, in weight percent: about 4-5% Zn; about 1-3% Mg; about 0-1% Cu; less than about 0.3% Si; less than about 0.12% Fe; less than about 0.5% Mn; about 0.01-0.05 wt % B; less than about 0.15% Ti; about 0.05-0.2% Zr; about 0.1-0.5% Ag; no more than about 0.05% each miscellaneous element or impurity; no more than about 0.15% total miscellaneous elements or impurities; balance aluminum. The alloy may advantageously be used in either T5 or T6 tempers.
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