Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Rinze Benedictus0
Alfred Johann Peter Haszler0
Alfred Ludwig Heinz0
Christian Joachim Keidel0
Date of Patent
October 20, 2009
0Patent Application Number
106425180
Date Filed
August 18, 2003
0Patent Primary Examiner
Patent abstract
The present invention concerns a balanced Al—Cu—Mg—Si alloy having a high toughness, good strength levels and an improved fatigue crack growth resistance, comprising essentially the following composition (in weight percent): Cu: 3.6-4.9, Mg: 1.0-1.8, Mn:≦0.50, preferably <0.30, Si: 0.10-0.40, Zr:≦0.15, Cr:≦0.15, Fe:≦0.10, the balance essentially aluminum and incidental elements and impurities. There is also disclosed a method for producing the balanced Al—Cu—Mg—Si alloy product having a high toughness and an improved fatigue crack growth resistance, and applications of that product as a structural member of an aircraft.
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