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ISO 2119:1972WithdrawnMagnesium-zinc-zirconium alloy castings — Chemical compositionInternational Standard · Published 1 Feb 1972 · ISO/TC 79/SC 5ISO 3335:1977WithdrawnExtruded solid profiles in aluminium-zinc- magnesium alloy Al Zn4,5 Mg1 (7020) — Chemical composition and mechanical propertiesInternational Standard · Published 1 Dec 1977 · ISO/TC 79/SC 6