Abstract
Increase of hardness of the ternary alloys-Superduralumin, Sander Alloy, Ealloy-by heat treatment was studied. The highly hardenable alloys were obtained. The mechanical properties of these new alloys were studied, They have very high strength (about 70kg/mmmm2). The report of the study on the new strong light alloy II, which has been improved of its properties, will follow in the near future.
