ALUMINIUM ALLOY ELECTRICAL CONDUCTORS AND A PROCESS FOR PRODUCING THEM BY THERMO-MECHANICAL TREATMENT

摘要

1525961 Aluminium alloy wires; heat treatment SOC DE VENTE DE L'ALUMINIUM PECHINEY 28 Aug 1975 [28 Aug 1974] 35512/75 Heading C7A An electrical conductor having a resistivity of # 2À88 micro-ohm/cm at 20‹C (i.e. 60% I.A.C.S.), breaking strain 13-19 hecto bar and elongation # 5 % is formed from an alloy containing in wt per cent with the proviso that Al-Fe-Si alloys containing 0-24% Si must also contain Cu within the range specified. The alloy has been subjected to such treatment that the elements of the first and second groups above are at least substantially out of solution. The conductor is produced by subjecting a blank to reduction with a work-hardening figure of 1000% followed by a final heat-treatment at 150-300‹C for a few minutes to 24 hours. Additionally an intermediate heat-treatment of 10 minutes to 10 hours at 180-250‹C may be applied during working.