Technical Data

For your convenience, we’ve made tools and technical data about our products available to help you find the best solution to meet your needs.

Copper & Aluminum Properties

Property Copper Aluminum
Volume Conductivity @ 20°C (IACS) 100.0% 61.8%
Volume Resistivity @ 20°C (ohm-cir mil per foot) 10.371 16.782
Temperature Coefficient of Resistance @ 20°C 0.00393 0.00410
Coefficient of Linear Expansion (per °C) 0.000017 0.000023
Density @ 20°C (gm/cubic cm) 8.89 2.703

Resistance Correction

Temperature Resistance Correction Factor
°C °F Copper Aluminum
15.0 59.0 0.9804
16.0 60.8 0.9842
17.0 62.6 0.9882
18.0 64.4 0.9922
19.0 66.2 0.9961
20.0 68.0 1.0000 1.0000
20.5 68.9 1.0020 1.0021
21.0 69.8 1.0039 1.0041
21.5 70.7 1.0059 1.0062
22.0 71.6 1.0079 1.0082
22.5 72.5 1.0098 1.0103
23.0 73.4 1.0118 1.0123
23.5 74.3 1.0138 1.0144
24.0 75.2 1.0157 1.0164
24.5 76.1 1.0177 1.0185
25.0 77.0 1.0197 1.0205
25.5 77.9 1.0216 1.0226
26.0 78.8 1.0236 1.0246
26.5 79.7 1.0255 1.0267
27.0 80.6 1.0275 1.0287
27.5 81.5 1.0295 1.0308
28.0 82.4 1.0314 1.0328
28.5 83.3 1.0334 1.0349
29.0 84.2 1.0354 1.0369
29.5 85.1 1.0373 1.0390
30.0 86.0 1.0393 1.0410
30.5 86.9 1.0413 1.0431
31.0 87.8 1.0433
32.0 89.6 1.0471
33.0 91.4 1.0511
34.0 93.2 1.0551
35.0 95.0 1.0590
36.0 96.8 1.0630
37.0 98.6 1.0668
38.0 100.4 1.0709
39.0 102.2 1.0747
40.0 104.0 1.0786
To convert resistance to 20°C (68°F), divide resistance by the correction factor for the corresponding temperature and metal indicated in the above table.To find ohms/foot, divide Volume Resistivity by area in circular mils.

Temperature Conversion

°C Temperature °F
-17.8°C 0 32°F
-12.2°C 10 50°F
-6.7°C 20 68°F
-1.1°C 30 86°F
4.4°C 40 104°F
10.0°C 50 122°F
15.6°C 60 140°F
21.1°C 70 158°F
26.7°C 80 176°F
32.2°C 90 194°F
37.8°C 100 212°F
43.3°C 110 230°F
48.9°C 120 248°F
54.4°C 130 266°F
60.0°C 140 284°F
65.6°C 150 302°F
71.1°C 160 320°F
76.7°C 170 338°F
82.2°C 180 356°F
87.8°C 190 374°F
93.3°C 200 392°F
98.9°C 210 410°F
104.4°C 220 428°F
110.0°C 230 446°F
115.6°C 240 464°F
121.1°C 250 482°F
126.7°C 260 500°F
132.2°C 270 518°F
137.8°C 280 536°F
143.3°C 290 554°F
148.9°C 300 572°F
154.4°C 310 590°F
160.0°C 320 608°F
165.6°C 330 626°F
171.1°C 340 644°F
176.7°C 350 662°F
182.2°C 360 680°F
187.8°C 370 698°F
193.3°C 380 716°F
198.9°C 390 734°F
204.4°C 400 752°F
210.0°C 410 770°F
215.6°C 420 788°F
221.1°C 430 806°F
226.7°C 440 824°F
232.2°C 450 842°F
237.8°C 460 860°F
243.3°C 470 878°F
248.9°C 480 896°F
254.4°C 490 914°F
260.0°C 500 932°F
265.6°C 510 950°F
271.1°C 520 968°F
The center column of numbers refer to the temperature (in degrees C or F) which is to be converted to the other scale.Example 1: 70°F to be converted to °C. Find 70 in the center column and read 21.1°C to the left.Example 2: 70°C to be converted to °F. Find 70 in the center column and read 158°F to the right.

Unit Conversion

Unit Conversion

Metric/AWG Chart

Conversion – AWG to mm
AWG Nom Exact AWG Nom Exact AWG Nom Exact
Size In mm Size In mm Size In mm
12.0 0.0808 2.05 21.5 0.0269 0.68 31 0.0089 0.23
12.5 0.0764 1.94 22.0 0.0253 0.64 32 0.0080 0.20
13.0 0.0720 1.83 22.5 0.0240 0.61 33 0.0071 0.18
13.5 0.0681 1.73 23.0 0.0226 0.57 34 0.0063 0.16
14.0 0.0641 1.63 23.5 0.0214 0.54 35 0.0056 0.14
14.5 0.0606 1.54 24.0 0.0201 0.51 36 0.0050 0.13
15.0 0.0571 1.45 24.5 0.0190 0.48 37 0.0045 0.11
15.5 0.0540 1.37 25.0 0.0179 0.45 38 0.0040 0.10
16.0 0.0508 1.29 25.5 0.0169 0.43 39 0.0035 0.09
16.5 0.0481 1.22 26.0 0.0159 0.40 40 0.0031 0.08
17.0 0.0453 1.15 26.5 0.0150 0.38 41 0.0028 0.07
17.5 0.0428 1.09 27.0 0.0142 0.36 42 0.0025 0.06
18.0 0.0403 1.02 27.5 0.0134 0.34 43 0.0022 0.06
18.5 0.0381 0.97 28.0 0.0126 0.32 44 0.0020 0.05
19.0 0.0359 0.91 28.5 0.0120 0.30 45 0.0018 0.05
19.5 0.0340 0.86 29.0 0.0113 0.29 46 0.0016 0.04
20.0 0.0320 0.81 29.5 0.0107 0.27 47 0.0014 0.04
20.5 0.0303 0.77 30.0 0.0100 0.25
21.0 0.0285 0.72 30.5 0.0095 0.24
Conversion – mm to AWG
mm NOM Exact mm Nom Exact mm Nom Exact
Size In AWG Size In AWG Size In AWG
2.00 0.0787 12.22 0.55 0.0217 23.36 0.22 0.0087 31.26
1.90 0.0748 12.67 0.50 0.0197 24.18 0.21 0.0083 31.66
1.80 0.0709 13.13 0.48 0.0189 24.53 0.20 0.0079 32.08
1.70 0.0669 13.63 0.46 0.0181 24.90 0.19 0.0075 32.53
1.60 0.0630 14.15 0.44 0.0173 25.28 0.18 0.0071 32.99
1.50 0.0591 14.70 0.42 0.0165 25.68 0.17 0.0067 33.48
1.40 0.0051 15.30 0.40 0.0157 26.10 0.16 0.0063 34.01
1.30 0.0512 15.94 0.38 0.0150 26.55 0.15 0.0059 34.56
1.20 0.0472 16.63 0.36 0.0142 27.01 0.14 0.0055 35.16
1.10 0.0433 17.78 0.34 0.0134 27.51 0.13 0.0051 35.80
1.00 0.0394 18.20 0.32 0.0126 28.03 0.12 0.0047 36.49
0.95 0.0374 18.64 0.30 0.0118 28.59 0.11 0.0043 37.24
0.90 0.0354 19.11 0.29 0.0114 28.88 0.10 0.0039 38.06
0.85 0.0335 19.60 0.28 0.0110 29.18 0.09 0.0035 38.97
0.80 0.0315 20.13 0.27 0.0106 29.49 0.08 0.0031 39.99
0.75 0.0295 20.68 0.26 0.0102 29.82 0.07 0.0028 41.14
0.70 0.0276 21.28 0.25 0.0098 30.16 0.06 0.0024 42.47
0.65 0.0256 21.92 0.24 0.0094 30.51 0.05 0.0020 44.04
0.60 0.0236 22.61 0.23 0.0091 30.88 0.04 0.0016 45.96