Patent ID: 7550110

Claim:
An Al—Zn—Mg—Cu alloy product with a thickness of up to 60 mm, said alloy consisting of (in mass percentage): a) Zn 9.0-9.5 Cu 1.32-1.67 Mg 1.6-about 1.96 Zr 0.03-0.15 Fe+Si<0.25, b) Ti from 0.02-0.15%, and c) aluminum remainder and inevitable impurities, and wherein Mg/Cu<1.7 and (7.7−0.4 Zn)>(Cu+Mg)>(6.4−0.4 Zn), wherein the elastic limit of said product is R p0.2 (L)>661 MPa and wherein the product comprises a breaking elongation A%(L)>10%.