COPPER ALLOY Russian patent published in 2010 - IPC C22C9/04 

FIELD: metallurgy.

SUBSTANCE: invention can be implemented for fabrication of mechanical parts requiring high cast properties, electric conductivity, heat conductivity and high mechanical properties, particularly for fabrication of electric contacts, connectors and electric parts easily welded and soldered, and also for other parts. Alloy contains, wt %: Cu 69-88, Si 2-5, Zr 0.0005-0.04, P 0.01-0.25, Zn - the rest, and also optionally at least one element chosen from a group Pb 0.005-0.45, Bi 0.005-0.45, Se 0.03-0.45, Te 0.01-0.45, and/or optionally at least one element chosen from a group Sn 0.05-1.5, As 0.02-0.25, Sb 0.02-0.25. Alloy has metallic structure containing α-phase and k-phase and/or γ-phase, while average diametre of alloy grains in macrostructure is 200 mcm or less at solidifying. Contents of elements and phases in alloy meet additional requirements.

EFFECT: improved properties of copper alloy.

24 cl, 24 tbl, 13 dwg