Copper Clad Aluminum

Copper Clad Aluminum (CCA) is a clad bi-metal utilizing electrical conductor grade aluminum as its core and oxygen free copper for its outer layer. The cladding process creates a permanent continuous weld between the two metals. The composite wire is uniquely suited to electrical applications where weight and conductivity issues are critical. The copper makes up either 10% or 15% of the cross sectional area of the wire and assures excellent solderability. AC conductivity at frequencies greater than 5MHz is equal to solid copper. CCA is manufactured in accordance with the requirements of ASTM B-566. Film Insulations are available on CCA. See the magnet wire insulation guide for enamel options.

Applications of Copper Clad Aluminum


Amplification, Noise elimination, custom guitar cables, loudspeakers, subwoofers and high performance audio


Wireless chargers, custom power supplies

Aerospace, military, commercial

Extreme temperature sensors, noise control, custom magnetics, underwater sensors

Space propulsion systems, sensors

Booms (Retractable tube for inflight tranfer of fuel)

Specialty resistors and capacitors

Wireless power transfer systems using inductive coupling through magnetic field

Electromagnetic radiation and atomic research

Coaxial Cable

Microwave connectors and cables

CATV semi-rigid trunk, distribution cables

Hobby motors and wiring

Residential power conductors


Advanced fuel injection systems

Technical equipment

Outdoor control panels, sensors, printers

Hearing Aids

Button Cell Batteries

Copper Clad Aluminum Typical Physical Properties

Test Measurement10% CCA15% CCA
DC Conductivity62.9% min IACS64.4% min IACS
% Copper by Volume8 - 12%13 - 17%
% Copper by Weight27% nominal34% nominal
Density.120 lb/cu in.131 lb/cu in
Tensile Strength (annealed)20 - 25 kPSI20 - 25 kPSI
Tensile Strength (hard drawn)16 - 30 kPSI16 - 30 kPSI
Elongation (annealed)5 - 15% minimum5 - 15% minimum
Elongation (hard drawn)1% minimum1% minimum

(Tensile and elongation values are size dependent)

Copper Clad Aluminum and Other Clad Metals Data

Download Data Sheet