logo.gif (5139 bytes) Copper Clad Aluminum

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Copper Clad Aluminum Typical Physical Properties
Copper clad aluminum is a composite wire consisting of an aluminum core clad with ETP copper. Even though the material is 90% aluminum, the wire has high frequency electrical properties equal to solid copper. MWS Wire Industries produces a broad line or round, flat, square, and rectangular copper clad aluminum wire. Copper clad bare, plated, and film insulated. Copper clad aluminum is widely used in applications requiring the conductivity of copper while retaining much of the weight advantages of aluminum. A.C. conductivity > 5 MHz....Equal to solid copper
D.C. conductivity - 65% IACS
Density - .1199 lbs / cubic inch
% copper by volume - 10% + 2%
% copper by weight - 26.8% + 2%
Coefficient of thermal expansion - 22.9 ppm / °C
Tensile strength - Annealed - 16,500 psi
Tensile strength - Hard - 23,5000 psi
Yield strength - Annealed - 12,000 psi
Yield strength - Hard - 21,6000 psi
% elongation - Annealed - 15%
% elongation - Hard - 2.5%

Size Diameter (inches) Area (sq inches) Feet per pound Pounds per 1000 feet Resistance (ohms per 1000 feet @ 20C)
( AWG ) Nominal Nominal Copper 10% Cu / Al Copper 10% Cu / Al Copper 10% Cu / Al
14 .0641 .00323 80.4 215 12.4 4.64 2.52 3.91
15 .0571 .00256 101 270 9.87 3.69 3.18 4.93
16 .0508 .00203 128 342 7.81 2.92 4.02 6.23
17 .0453 .00161 161 430 6.21 2.32 5.05 7.83
18 .0403 .00128 203 542 4.92 1.84 6.39 9.90
19 .0359 .00100 256 684 3.90 1.46 8.05 12.50
20 .0320 .000804 323 862 3.10 1.16 10.1 15.7
21 .0285 .000636 407 1087 2.46 .920 12.3 19.8
22 .0253 .000503 516 1378 1.94 .726 16.2 25.1
23 .0226 .000401 647 1728 1.55 .580 20.3 31.5
24 .0201 .000317 818 2184 1.22 .456 25.7 39.8
25 .0179 .000252 1030 2750 .970 .363 32.4 250.2
26 .0159 .000199 1310 3498 .765 .286 41.0 63.6
27 .0142 .000158 1640 4378 .610 .228 51.4 79.7
28 .0126 .000125 2080 5554 .481 .180 65.3 101
29 .0113 .000100 2590 6915 .387 .145 81.2 126
30 .0100 .0000785 3300 8811 .303 .113 104 161
31 .0089 .0000622 4170 11134 .240 .0896 131 203
32 .0080 .0000503 5160 13777 .194 .0726 162 251
33 .0071 .0000396 6550 17488 .153 .0572 206 319
34 .0063 .0000312 8320 22214 .120 .0449 261 405
35 .0056 .0000246 10500 28035 .0949 .0355 331 513
36 .0050 .0000196 13200 35244 .0757 .0283 415 643
37 .0045 .0000159 16300 43521 .0613 .0229 512 794
38 .0040 .0000126 20600 55002 .0484 .0181 648 1000
39 .0035 .00000962 27000 72090 .0374 .0139 847 1310
40 .0031 .00000755 34400 91848 .0291 .0109 1080 1670

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