The Investigation, into the Nickelless, High-Conductible and High-Strengthened Copper Alloys (3rd Report)

According to the 1st and 2nd reports, the present author investigated the changes of the mechanical properties, electrical conductivity and other properties in the most proper B 3 Alloy (Fe 1.56%, P 0.46%, Cu Bal) by coldworking and heat-treatments, Thus, he could not obtain a bit of high strength, but obtain some extent of very high conductivity in Cu-Fe-P Alloy. Then, he added the elements, Si, Sn, Zn (each of them is under 1-0%), Ag (under 2'0 %) and Cd (under 1.65%) to the B 3 Alloy, and investigated the induence caused by the addition of those elements on the change of the mechanical properties, electrical conductivity and other properties. The result is that the B 3 Alloy (2% Fe2P-Cu Alloy) containing about 1% of Cd is the most useful of all such materials:-the tensil strength is 85_??_90kg/mm2 and the electrical conductivity 65_??_60% if he applvs a proper cold-working and heat-treatments to this alloy. Conclusively, it is suitable that the Cu-Ni-Si Alloy (Corson's Alloy) is replaced by this Cu-Fe2P-Cd Alloy which has the better characteristics as a high-strengthened electrical conductor.