Abstract: The present invention relates to an aluminum alloy for the manufacture of thick blocks comprising (as a percentage by weight), Zn: 5.3-5.9%, Mg: 0.8-1.8%, Cu: <0.2%, Zr: 0.05 to 0.12%, Ti<0.15%, Mn<0.1%, Cr<0.1%, Si<0.15%, Fe<0.20%, impurities having an individual content of <0.05% each and <0.15% in total, the rest aluminum, The alloy may be used in a process comprising the steps of: (a) casting a thick block of an alloy according to the invention (b) solution heat treating said cast block at a temperature of 500 to 560° C. for 10 minutes to 20 hours, (c) cooling said solution heat treated block to a temperature below 100° C., (d) tempering said solution heat treated and cooled block by heating to 120 to 170° C. for 4 to 48 hours, In this process, said block is not subjected to any significant deformation by working between the casting and the tempering.

Abstract: Armor panel comprising an aluminium alloy plate wherein: a) said aluminium alloy has the following chemical composition expressed in percentages per weight: 5.1%?Zn?9.7% 1.5%?Mg?2.9% 1.2%?Cu?2.1% Si?0.4% Fe?0.5% Mn?0.3% Cr?0.28% Ti?0.2% Zr?0.15% b) said plate comprises a face oriented towards the shocks and a face opposite said face oriented towards the shocks coated with a composite reinforcing layer comprising reinforcing fibres or bands with high ballistic protection performance, typically made of high mechanical performance glass, aramid or high performance polyethylene.

Abstract: The present invention relates to an aluminum alloy for the manufacture of thick blocks comprising (as a percentage by weight), Zn: 5.3-5.9%, Mg: 0.8-1.8%, Cu: <0.2%, Zr: 0.05 to 0.12%, Ti<0.15%, Mn<0.1%, Cr<0.1%, Si<0.15%, Fe<0.20%, impurities having an individual content of <0.05% each and <0.15% in total, the rest aluminum, The alloy may be used in a process comprising the steps of: (a) casting a thick block of an alloy according to the invention (b) solution heat treating said cast block at a temperature of 500 to 560° C. for 10 minutes to 20 hours, (c) cooling said solution heat treated block to a temperature below 100° C., (d) tempering said solution heat treated and cooled block by heating to 120 to 170° C. for 4 to 48 hours, In this process, said block is not subjected to any significant deformation by working between the casting and the tempering.