FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy of light alloys, particularly, to super strong heat-treatable aluminium alloys of Al-Zn-Mg-Cu system intended for making semis, i.e. formed and rolled tubes, stamped covers to be used as has centrifuge parts. Articles are made from alloy containing the following components in wt %: zinc 8.0-9.0, magnesium 2.3-3.0, copper 2.0-2.6, zirconium 0.1-0.2, beryllium 0.0001-0.002, cerium 0.005-0.05, calcium 0.005-0.05, titanium 0.005-0.05, iron up to 0.15, silicon up to 0.1, and at least of element of the group: manganese up to 0.1, aluminium making the rest.
EFFECT: higher strength, ductility, toughness, fatigue strength.
2 cl, 2 tbl, 1 ex
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