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Copper Clad Steel
Copper clad steel is available with either 30% or 40% conductivity in two tempers -soft and as drawn. Copper clad steel is used where the conductivity of copper and strength of steel are desired. Copper clad steel can be produced bare or electroplated with gold, silver, tin, solder, and nickel.

Size Diameter Pounds per 1000 ft. Resistance Tensile Strength (psi) Elongation Tensile Strength (psi) Elongation
( inches) ohms per 1000 ft @ 20C Soft temper (% in 10 inch) Hard temper (% in 10 inch)
( AWG ) Nominal   40% 30% 40% 30% Soft 40% 30% Hard
18 .0403 4.507 16.28 21.71 45,000 50,000 15 110,000 127,000 1.0
19 .0359 3.575 20.53 27.37 45,000 50,000 15 110,000 127,000 1.0
20 .0320 2.835 25.89 34.52 45,000 50,000 15 110,000 127,000 1.0
21 .0285 2.248 32.65 43.52 50,000 55,000 15 110,000 127,000 1.0
22 .0253 1.783 41.17 54.88 50,000 55,000 15 110,000 127,000 1.0
23 .0226 1.414 51.92 69.21 50,000 55,000 15 110,000 127,000 1.0
24 .0201 1.121 65.46 87.27 50,000 55,000 10 110,000 127,000 1.0
25 .0179 .889 82.55 110.0 50,000 55,000 10 110,000 127,000 1.0
26 .0159 .705 104.1 138.8 50,000 55,000 10 110,000 127,000 1.0
27 .0142 .559 131.3 175.0 50,000 55,000 10 110,000 127,000 1.0
28 .0126 .443 165.5 220.6 50,000 55,000 10 110,000 127,000 1.0
29 .0113 .352 208.7 278.2 50,000 55,000 10 110,000 127,000 1.0
30 .0100 .279 263.2 350.8 50,000 55,000 10 110,000 127,000 1.0
31 .0089 .221 3.319 442.4 50,000 55,000 10 110,000 127,000 1.0
32 .0080 .175 4.185 557.8 50,000 55,000 10 110,000 127,000 1.0
33 .0071 .139 527.7 703.4 50,000 55,000 10 110,000 127,000 1.0
34 .0063 .110 665.4 887 50,000 55,000 10 110,000 127,000 1.0
35 .0056 .087 839 1119 50,000 55,000 10 110,000 127,000 1.0
36 .0050 .069 1058 1410 50,000 55,000 10 110,000 127,000 1.0
37 .0045 .055 1334 1778 50,000 55,000 10 110,000 127,000 1.0
38 .0040 .044 1682 2243 50,000 55,000 10 110,000 127,000 1.0
39 .0035 .035 2121 2828 50,000 55,000 10 110,000 127,000 1.0
40 .0031 .027 2675 3566 50,000 55,000 10 110,000 127,000 1.0

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