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US 2005/0238529 A1Published application
Heat treatable Al-Zn-Mg alloy for aerospace and automotive castings
OwnerJen Lin, Cagatay Yanar +3inventors
InventorsJen Lin, Cagatay Yanar, Michael Brandt, Xinyan Yan, Wenping Zhang
Life of this patent
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Abstract
A heat treatable aluminum alloy for shaped castings includes from about 3.5-5.5% Zn, from about 1-1.5% Mg, less than about 1% Si, less than about 0.30% Mn, and less than about 0.3% Fe and other incidental impurities.
Claims27
A heat treatable aluminum alloy for shaped castings, said aluminum alloy comprising, in weight percent, alloying ingredients as follows:
- Zn:
- about 3.5-5.5%;
- Mg:
- about 0.8-1.5%;
- Si:
- less than about 1%;
- Mn:
- less than about 0.30%;
- and
- Fe and other incidental impurities:
- less than about 0.30%.
8 more elements
A shaped casting of an aluminum alloy, wherein said alloy comprises alloying ingredients as follows:
- Zn:
- about 3.5-5.5%;
- Mg:
- about 0.8-1.5%;
- Si:
- less than about 1%;
- Mn:
- less than about 0.30%;
- and
- Fe and other incidental impurities:
- less than about 0.30%.
8 more elements
A method of making an aluminum alloy shaped casting, said method comprising:
- preparing a molten mass of an aluminum alloy, said alloy comprising alloying ingredients as follows:
- Zn:
- about 3.5-5.5%;
- Mg:
- about 0.8-1.5%;
- Si:
- less than about 1%;
- Mn:
- less than about 0.30%;
- Fe and other incidental impurities:
- less than about 0.30%;
- casting at least a portion of said molten mass in a mold configured to produce said shaped casting;
- permitting said molten mass in said mold to solidify;
- and
- removing said shaped casting from said mold.
12 more elements
Dependencies are inferred from the claim text.