HIGH THERMAL CONDUCTIVITY ALUMINUM FIN ALLOYS

摘要

A method of producing an aluminum alloy finstock material, comprising the steps of continuously strip casting an aluminum finstock alloy to form an as - cast strip, rolling the as-cast strip to form a sheet article of intermediat e gauge, annealing the sheet article of intermediate gauge, and cold rolling t he annealed sheet article of intermediate gauge to produce an aluminum finstock material of final gauge. The steps are carried out on a finstock alloy which comprises the following elements in weight percent: Fe 1.6 to 2.4; Si 0.7 to 1.1; Mn 0.3 to 0.6; Zn 0.3 to 2.0; Ti 0.005 to 0.040; incidental elements le ss than 0.05 each, total no more than 0.15; and the balance aluminum. The invention also relates to the finstock material of the indicated composition , preferably produced by the method, which has good thermal conductivity, and is suitable for use in thin gauge (e.g. less than 100 .mu.m, and preferably 60 .plusmn. 10 .mu.m).