Alloy 90

Composition Copper: 88%, Nickel: 12%
Resistance 90 ohm-cir-mil/ft 0.0000150 ohm-cm
Maximum Recommended Operating Temperature 752° F 400° C
Melting Point 1994° F 1090° C
Density ( @ 20.0° C/ 68.0° F) 0.321 lb/in³ 8.89 g/cc
Tensile Strength, Ultimate, Annealed 35000 psi 241 MPa
Tensile Strength, Ultimate, Hard Drawn 75000 psi 517 MPa
Temperature Coefficient of Resistance 0.00040 –
Magnetic Properties None –

Amperage vs. Temperature*

AWG Dia. 100° C 200° C 300° C 400° C 500° C 600° C 700° C
20 0.0320 4.28 8.23 11.73 14.56 16.43 20.00 23.17
21 0.0285 3.96 7.45 10.47 12.94 14.72 17.66 20.35
22 0.0253 3.62 6.69 9.28 11.44 13.10 15.53 17.80
23 0.0226 3.31 6.01 8.26 10.16 11.70 13.73 15.66
24 0.0201 2.99 5.36 7.30 8.95 10.36 12.06 13.71
25 0.0179 2.69 4.76 6.44 7.88 9.16 10.59 11.99
26 0.0159 2.40 4.20 5.65 6.90 8.05 9.25 10.45
27 0.0142 2.14 3.71 4.97 6.06 7.09 8.11 9.14
28 0.0126 1.89 3.24 4.32 5.26 6.17 7.04 7.92
29 0.0113 1.67 2.85 3.79 4.61 5.41 6.17 6.93
30 0.0100 1.45 2.45 3.25 3.95 4.65 5.30 5.95
31 0.0089 1.26 2.11 2.79 3.39 4.00 4.56 5.12
32 0.0080 1.10 1.82 2.42 2.93 3.46 3.96 4.44
33 0.0071 0.93 1.54 2.04 2.47 2.91 3.36 3.77
34 0.0063 0.78 1.28 1.70 2.06 2.43 2.82 3.17
35 0.0056 0.65 1.05 1.40 1.70 2.00 2.35 2.65
36 0.0050 0.53 0.85 1.14 1.39 1.63 1.95 2.20

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Diameter and Resistance

Diameter Resistance (Ohms/ft.)
AWG in. mm Min. Nom. Max. LB/KFT FT/LB
8 0.1285 3.2639 0.0052 0.0055 0.0057 50.303 20
9 0.1144 2.9058 0.0065 0.0069 0.0072 39.869 25
10 0.1019 2.5883 0.0082 0.0087 0.0091 31.633 32
11 0.0907 2.3038 0.0104 0.0109 0.0115 25.061 40
12 0.0808 2.0523 0.0131 0.0138 0.0145 19.889 50
13 0.0720 1.8288 0.0165 0.0174 0.0182 15.793 63
14 0.0641 1.6281 0.0208 0.0219 0.0230 12.517 80
15 0.0571 1.4503 0.0262 0.0276 0.0290 9.933 101
16 0.0508 1.2903 0.0331 0.0349 0.0366 7.862 127
17 0.0453 1.1506 0.0417 0.0439 0.0461 6.251 160
18 0.0403 1.0236 0.0526 0.0554 0.0582 4.948 202
19 0.0359 0.9119 0.0663 0.0698 0.0733 3.926 255
20 0.0320 0.8128 0.0835 0.0879 0.0923 3.120 321
21 0.0285 0.7239 0.1053 0.1108 0.1163 2.474 404
22 0.0253 0.6426 0.1336 0.1406 0.1476 1.950 513
23 0.0226 0.5740 0.1674 0.1762 0.1850 1.556 643
24 0.0201 0.5105 0.2116 0.2228 0.2339 1.231 812
25 0.0179 0.4547 0.2668 0.2809 0.2949 0.976 1024
26 0.0159 0.4039 0.3382 0.3560 0.3738 0.770 1298
27 0.0142 0.3607 0.4240 0.4463 0.4687 0.614 1628
28 0.0126 0.3200 0.5385 0.5669 0.5952 0.484 2068
29 0.0113 0.2870 0.6696 0.7048 0.7401 0.389 2571
30 0.0100 0.2540 0.8550 0.9000 0.9450 0.305 3283
31 0.0089 0.2261 1.0794 1.1362 1.1930 0.241 4144
32 0.0080 0.2032 1.3359 1.4063 1.4766 0.195 5129
33 0.0071 0.1803 1.6961 1.7854 1.8746 0.154 6512
34 0.0063 0.1600 2.1542 2.2676 2.3810 0.121 8271
35 0.0056 0.1422 2.7264 2.8699 3.0134 0.096 10467
36 0.0050 0.1270 3.3120 3.6000 3.8880 0.076 13130
37 0.0045 0.1143 4.0889 4.4444 4.8000 0.062 16210
38 0.0040 0.1016 5.1750 5.6250 6.0750 0.049 20516
39 0.0035 0.0889 6.7592 7.3469 7.9347 0.037 26796
40 0.0031 0.0787 8.6160 9.3652 10.1145 0.029 34158
41 0.0028 0.0711 10.5612 11.4796 12.3980 0.024 41869
42 0.0025 0.0635 13.2480 14.4000 15.5520 0.019 52521
43 0.0022 0.0559 17.1074 18.5950 20.0826 0.015 67822
44 0.0020 0.0508 20.7000 22.5000 24.3000 0.012 82064
45 0.00176 0.0447 26.1493 29.0548 31.9602 0.009 105971
46 0.00157 0.0399 32.8614 36.5126 40.1639 0.008 133172
47 0.00140 0.0356 41.3265 45.9184 50.5102 0.006 167478
48 0.00124 0.0315 52.6795 58.5328 64.3861 0.005 213486
49 0.00111 0.0282 65.7414 73.0460 80.3506 0.004 266420
50 0.00099 0.0251 82.6446 91.8274 101.0101 0.003 334921

*Data was recorded from an experiment conducted in a controlled environment. Straight uninsulated wire was heated inside a closed container to limit heat loss due to convection. Thermal imaging camera was used to measure wire temperatures. Your results may vary. Pelican Wire Company (PWC) experimental data is provided strictly “as is” without any other warranty or guaranty of any kind. PWC shall not be liable for any indirect, special, incidental, consequential or punitive loss or damage of any kind, including but not limited to lost profits (regardless of whether or not PWC knows or should know of the possibility of such loss or damages). Any users of this product shall hold harmless and indemnify PWC against any and all loss, damage, injury, liability and claims for injury or death of any person. Back to top Order Online Get a Quote