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Copper clad aluminum wire (CAW)

Copper clad aluminum wire (hereinafter called CAW) is produced by mechanically cladding rod of aluminum with copper tape.
CA wire is composite material which has advantages of both copper and aluminum.
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Features

  • The weight is approximately 39% comparing to copper (15%CAW).
  • Cheaper cost:
    The length of same weight is 2.5 times comparing to copper.
  • Solderable
  • Good reliability of connection
    No increasing resistance because of no aluminum oxide film.
    Connection method is same as copper wire.


Table 1 Physical property of CAW

 

Copper wire

15%CAW

Aluminum wire

Density (20°C) g/cm³

8.89

3.63

2.70

Conductivity (%IACS)

100

68

62



Table 2 Comparison of CAW with Aluminum wire

Condition

Item

Copper wire

15%CAW

Aluminum wire

In case of same conductivity

Cross-sectional area

1

1.49

1.63

0.67

1

1.11

0.64

0.94

1.03

0.61

0.91

1

Diameter

1

1.22

1.28

0.82

1

1.05

0.80

0.97

1.01

0.78

0.95

1

Weight

1

0.61

0.50

1.64

1

0.82

1.89

1.13

0.92

2.01

1.22

1



Products using CAW

Coaxial cable

  • Inner conductor
  • Outer conductor (Tin pleated braided wire)

 



Solenoidal coil for speaker

 

Specifications

Cross-sectional area of Copper

Diameter

Tensile strength

Elongation

Conductivity

15 %

0.1 ~ 2.0 mm

196 MPa

1.0 %

64.2 %

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