Aluminum alloy product having improved combinations of...

Details Aluminum alloy product having improved combinations of... Aluminum alloy product having improved combinations of...

2006-08-29

2006-08-29

Wyszomierski, George (Department: 1742)

Metal treatment

Stock

Age or precipitation hardened or strengthened

C420S532000

Reexamination Certificate

active

07097719

ABSTRACT:
An alloy product having improved fatigue failure resistance, comprising about, by weight, 7.6 to about 8.4% zinc, about 2.0 to about 2.6% copper, about 1.8 to about 2.3% magnesium, about 0.088 to about 0.25.% Zr, about 0.01 to about 0.09.% Fe, and about 0.01 to about 0.06 w % Si the balance substantially aluminum and incidental elements and impurities The alloy product, suitable for aerospace applications, exhibits improved fatigue failure resistance than its 7055 counterpart of similar size, shape, thickness and temper.

REFERENCES:
patent: 5108520 (1992-04-01), Liu et al.
patent: 5221377 (1993-06-01), Hunt, Jr. et al.
patent: 5277719 (1994-01-01), Kuhlman et al.
patent: 6027582 (2000-02-01), Shahani et al.

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