Studies on the properties of some copper-manganese alloys

Abstract

RESERVES of non-ferrous metals in India, except that of aluminium and manganese, are limited. Since resources of manganese metal are abundant in India, the possibilities of substituting manganese as a major alloying element in place of zinc and nickel in non-ferrous alloys are there-fore important and need full applications. Manganese is one of the few elements which has a wide range of solub-ility in copper and the possibilities of utilising copper alloys containing manganese need careful consideration, as they have been shown to possess special properties, e.g., high strength,high damping property and high elec-trical resistivity.Work carried out at the U.S. Bureau of Minesr-" during the World War II showed the superior properties of different alloys made from electrolytic manganese compared to that of thermal manganese which invariably introduced impurities. Inspite of all these developments, the cost of electrolytic manganese and absence of sufficient data on the melting, working and various properties of these alloys have not yet encour- aged any large scale production of these alloys.