Pure and low-alloyed copper (Cu) are used for generating and distributing power due to the exceptional electrical and thermal conductivity of elemental copper.
Specialty Swissmetal Industries alloys with additional pure silver (Ag) increases raises the annealing temperature of copper allowing for high temperature applications.
Pure or low alloyed coppers
| Designation | ISO | ASTM | EN | JIS |
| NIB2K | CuNi2Si/Zr NIBROFOR2K | C64700 | CW111C | – |
| ECU | Cu-ETP / E-Cu / Cu-a1 | C11000 | CW004A | C1100 |
| CUOFE | Cu-OFE / Cu-c2 | C10100 | CW009A | C1011 |
| CUPHC | Cu-PHC / SE-Cu / Cu-c1 | C10300 | CW020A | – |
| CUHCP | Cu-HCP | – | CW021A | – |
| CUAG1OF | CuAg0.10(OF) | C11907 | CW019A | – |
| CUAG1P | CuAg0.10P | C11600 | CW016A | – |
Leadfree alloys
| Designation | ISO | ASTM | EN | JIS |
| E85 | CuZn15 | – | CW502L | – |
| E90 | CuZn10 | C22000 | CW501L | C2200 |
| E95 | CuZn5 | C21000 | CW500L | C2100 |
Typical applications:
- Power lines
- Earth leads,
- Generator rotors
- Bus bars (high-voltage installations, breakers, switchgear, and transformers)
