Abstract: Copper base alloys having improved rupture properties and improved hot rolling performance consisting of from 2 to 9.5% aluminum, preferably also from 0.001 to 3.0% silicon, a grain refining element, preferably cobalt in an amount from 0.001 to 5.0%, from 0.001 to 0.5% of a material selected from the group consisting of a material of the lanthanide series of the Periodic Table and mixtures thereof, and the balance essentially copper.

Abstract: A high conductivity high temperature copper alloy containing mischmetal and phosphorus in a specific ratio. The alloy is free from internal copper oxides and is suitable for applications requiring stability at elevated temperatures. Strengths on the order of 70 KSI and conductivities on the order of 90% IACS are obtainable in cold worked material.

Abstract: Improved copper alloys containing from 7 to 14% nickel, from 1.5 to 3.3% tin, plus iron and/or cobalt in an amount from 0.1 to 3% each. The alloys are characterized by good strength, good bend properties, good solderability and low contact resistance.

Abstract: A process for improving the elongation of copper base alloys containing about 2 to 4.5% aluminum, 15 to 31% zinc, and a grain refining element such as iron, chromium, zirconium, or cobalt, is carried out through controlled grain coarsening. Such alloys are subjected to a cold reduction of about 15 to 40%, an intermediate anneal at about 625.degree. to 725.degree.C., a final cold reduction of 12 to 45% and a final anneal at about 600.degree. to 725.degree.C. Alternatively, the above sequence may be preceded by a preliminary cold reduction of about 10 to 70% and then a preliminary low temperature anneal at about 400.degree. to 600.degree.C. followed by the above reductions and anneals.

Abstract: Method of processing nickel-tin containing copper base alloys in order to obtain an improved combination of strength and bend properties. The alloys processed herein contain from 7 to 14% nickel and from 1.5 to 3.3% tin.

Abstract: Improved properties are obtained in copper alloys containing from 7 to 14% nickel, from 1.5 to 3.3% tin, plus iron and/or cobalt in an amount from 0.1 to 3% each, by hot rolling, cold rolling, annealing and cold rolling, all under defined conditions. The resultant alloys are characterized by good strength, good bend properties, good solderability and low contact resistance.