Metal treatment – Stock – Age or precipitation hardened or strengthened
Reexamination Certificate
2011-01-25
2011-01-25
King, Roy (Department: 1733)
Metal treatment
Stock
Age or precipitation hardened or strengthened
C420S551000
Reexamination Certificate
active
07875132
ABSTRACT:
High temperature aluminum alloys that can be used at temperatures from about −420° F. (−251° C.) up to about 650° F. (343° C.) are described herein. These alloys comprise aluminum; scandium; at least one of nickel, iron, chromium, manganese and cobalt; and at least one of zirconium, gadolinium, hafnium, yttrium, niobium and vanadiuim. These alloys comprise an aluminum solid solution matrix and a mixture of various dispersoids. These alloys are substantially free of magnesium.
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King Roy
Kinney & Lange , P.A.
Morillo Janelle
United Technologies Corporation
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