ALLOY ON BASE OF ALUMINIUM AND ITEM OF THIS ALLOY Russian patent published in 2011 - IPC C22C21/06 

FIELD: metallurgy.

SUBSTANCE: alloy on base of aluminium used for welded structures and item of it contains following components, wt %: magnesium 5.1-6.5, manganese 0.4-1.2, zinc 0.45-1.5, zirconium to 0.2, chromium to 0.3, titanium to 0.2, iron to 0.5, silicon to 0.4, copper 0.002-0.25, calcium to 0.01, beryllium to 0.01, at least one element of group: boron, carbon each to 0.06, at least element of group: bismuth, lead, tin each to 0.1, scandium, silver, lithium each to 0.5, vanadium, cerium, yttrium each to 0.25, at least one element of group: nickel and cobalt each to 0.25, aluminium and unavoidable impurities at summary contents of magnesium and zinc 5.7-7.3 wt % and summary contents of iron, cobalt and/or nickel - not more, than 0.7 wt %.

EFFECT: alloy and items of it possessing anti-pulp resistance, upgraded mechanical properties in annealed condition including cryogenic temperatures.

6 cl, 3 tbl