Investigations are carried on conducting properties of alloys of contact materials CuCr and CuCrFe after different temperature and different time of heat treatment. The results show that the electrical conductivity of alloys CuCr has increased 20% above
and 30% above for alloy CuCrFe after heat treatment of holding temperature at 500℃ for 4h. And from micro structure
the reasons are analyzed for improving the electrical conductivity of alloys by means of heat treatment.