High strength and corrosion resistant aluminum article and metho

Details High strength and corrosion resistant aluminum article and metho High strength and corrosion resistant aluminum article and metho

1984-07-16

1986-12-16

Dean, R.

Metal treatment

Compositions

Heat treating

148415, 148417, C22F 104

Patent

active

046295178

ABSTRACT:
A shaped aluminum article is disclosed characterized by a yield strength of over 414 MPa (60 ksi) and good corrosion resistance when aged to a T76 temper. The article is formed from an aluminum base alloy having good formability in an annealed state, and sufficiently low quench sensitivity to permit air quenching. The alloy consists essentially of: 6.5. to 7.5 wt. % zinc, 2.4 to 3.0 wt. % magnesium, 0.0 to 0.8 wt. % copper, and 0.01 to 0.18 wt. % zirconium, with the following maximum amounts of other alloying ingredients or impurities: 0.2 wt. % silicon, 0.4 wt. % iron, 0.1 wt. % manganese, 0.05 wt. % chromium, 0.06 wt. % titanium, and 0.05 wt. % maximum each other alloying ingredient or impurity with a total maximum of 0.15 wt. %, the balance consisting of aluminum.

REFERENCES:
patent: 3762916 (1973-10-01), Kirman

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