Applications:
Used as bare overhead transmission cable and as primary and secondary distribution cable. A good strength-to-weight ratio makes ACAR applicable where both ampacity and strength are prime considerations in line design. For equal weight ACAR offers higher strength and ampacity than ACSR.

specifications:

ACAR bare conductor meets or exceeds the following ASTM specifications: 
B-230 Aluminium Wire, 1350-H19 for Electrical Purposes 
B-398 Aluminium Alloy 6201-T81 for Electrical Purposes 
B-524 Concentric-Lay-Stranded Aluminium Conductors, Aluminium Alloy Reinforced
ACAR, 1350/6201

Construction

Aluminium alloy 1350-H19 wires, concentrically stranded about an Aluminium alloy 6201 core. Although the alloy strands generally comprise the core of the cable, in some constructions they are distributed in layers throughout the Aluminium alloy 1350-H19 strands.