The invention relates to a laminated product having a thickness of at least 50 mm in aluminum alloy comprising in% by weight 2.2 to 3.9% Cu, 0.7 to 1.8% Li, 0.1 to 0.8% Mg, 0.1 to 0.6% Mn; 0.01 to 0.15% of Ti, at least one element selected from Zn and Ag, the amount of said element if it is chosen being 0.2 to 0.8% for Zn and 0.1 to 0.5% for Ag, optionally at least one element selected from Zr, Cr, Sc, Hf, and V, the amount of said element if it is chosen being 0.04 to 0.18% for Zr, 0.05 to 0.3% for Cr and for Sc, 0.05 to 0.5% for Hf and for V, less than 0.1% of Fe, less than 0.1% of Si remains aluminum and unavoidable impurities, with a content of less than 0 , 05% each and 0.15% in total; characterized in that its granular structure is predominantly recrystallized between 1/4 and 1/2 thickness. The invention also relates to the method of manufacturing such a product. The products according to the invention are advantageously used in aeronautical construction, in particular for the production of a spar or an airfoil rib.
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