Typically, for the Electrical Power Generation Industry, electrical bus, wire and cable is fabricated of AA 1350. See the following ASTM Standards below;
ASTM B230 "Standard Specification for Aluminum 1350-H19 Wire for Electrical Purposes"
ASTM B231 "Standard Specification for Concentric Lay-Stranded Aluminum 1350 Conductors"
ASTM B233 "Standard Specification for Aluminum 1350 Drawing Stock for Electrical Purposes"