| abstract |
Aluminum alloy electrical conductors are produced from aluminum base alloys containing from about 0.20 to about 1.60 weight percent cobalt, from about 0.30 to about 1.30 weight percent iron, up to about 0.40 weight percent magnesium, up to about 0.40 weight percent copper, from about 99.50 to about 97.00 weight percent aluminum and up to about 0.45 weight percent each of additional alloying elements, the total weight percent of additional alloying elements not exceeding about 0.70 percent; the total weight percent of magnesium and copper not exceeding about 0.40 percent and the total weight percent of additional alloying elements not exceeding about 0.40 percent when the total weight percent of cobalt and iron exceeds about 1,80 percent. The alloy conductors have an electrical conductivity of at least 57 percent, based on the International Annealed Copper Standard (IACS), and improved properties of increased thermal stability, tensile strength, percent ultimate elongation, ductility, fatigue resistance and yield strength as compared to conventional aluminum alloys of similar electrical properties. |