Sheet or plate product made from a substantially vanadium-free a

Details Sheet or plate product made from a substantially vanadium-free a Sheet or plate product made from a substantially vanadium-free a

1995-12-26

1997-07-29

Turner, Archene

Stock material or miscellaneous articles

Composite

Of metal

420532, 420533, 148415, 148417, C22C 2100

Patent

active

056520638

ABSTRACT:
There is claimed a sheet or plate structural member suitable for aerospace applications and having improved combinations of strength and toughness. The member is made from a substantially vanadium-free aluminum-based alloy consisting essentially of: about 4.85-5.3 wt. % copper, about 0.5-1.0 wt. % magnesium, about 0.4-0.8 wt. % manganese, about 0.2-0.8 wt. % silver, about 0.05-0.25 wt. % zirconium, up to about 0.1 wt. % silicon, and up to about 0.1 wt. % iron, the balance aluminum, incidental elements and impurities, the Cu:Mg ratio of said alloy being between about 5 and 9, and more preferably between about 6.0 and 7.5. The invention exhibits a typical tensile yield strength of about 77 ksi or higher at room temperature and can be processed into various lower wing members or into the fuselage skin of high speed aircraft.

REFERENCES:
patent: Re26907 (1970-06-01), Doyle et al.
patent: 3925067 (1975-12-01), Sperry et al.
patent: 5376192 (1994-12-01), Cassada, III

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