FIELD: metallurgy. SUBSTANCE: aluminium-base alloy of a system Al-Zn-Mg-Cu has the following components, wt.-%: zinc, 5.0-6.5; magnesium, 1.8-2.8; copper, 1.4-2.0; manganese, 0.2-0.6; chrome, 0.1-0.25; iron, 0.0001-0.3; silicon, 0.0001-0.1; nickel, 0.0001-0.1; titanium, 0.0001-0.08; sulfur, 0.0001-0.0004; and aluminium, the balance. The regulated addition of sulfur to alloy composition ensures to increase strength limit at sample testing for cutting. EFFECT: improved quality of alloy. 2 tbl
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