Alloy 675 (Nichrome 60)

Composition Nickel: 60%, Iron 24%, Chromium 16%
Resistance 675 ohm-cir-mil/ft 0.000112 ohm-cm
Maximum Recommended Operating Temperature 1850° F 1010° C
Melting Point 2534° F 1390° C
Density ( @ 20.0° C/ 68.0° F) 0.298 lb/in³ 8.25 g/cc
Tensile Strength, Ultimate, Annealed 95000 psi 655 MPa
Tensile Strength, Ultimate, Hard Drawn 175000 psi 1207 MPa
Temperature Coefficient of Resistance 0.00015 –
Magnetic Properties Faint –

Amperage vs. Temperature*

AWG Dia. 200° C 300° C 400° C 500° C 600° C 700° C 800° C 900° C 1000° C 1100° C
20 0.0320 3.85 4.70 5.80 6.90 8.20 9.70 11.40 13.30 15.40 17.40
21 0.0285 3.30 4.05 4.95 5.90 7.10 8.30 9.85 11.20 13.10 14.80
22 0.0253 2.85 3.55 4.25 5.10 6.00 7.30 8.40 9.60 11.15 12.60
23 0.0226 2.45 3.10 3.70 4.45 5.10 6.30 7.30 8.45 9.70 10.90
24 0.0201 2.16 2.75 3.40 3.90 4.60 5.40 6.35 7.25 8.30 9.40
25 0.0179 1.85 2.35 2.90 3.40 4.00 4.65 5.45 6.30 7.15 8.05
26 0.0159 1.61 2.00 2.48 2.90 3.40 3.95 4.65 5.40 6.10 6.90
27 0.0142 1.39 1.75 2.13 2.55 2.95 3.52 4.05 4.70 5.30 5.95
28 0.0126 1.21 1.53 1.84 2.18 2.60 3.04 3.55 4.06 4.55 5.10
29 0.0113 1.08 1.35 1.62 1.95 2.30 2.65 3.12 3.45 3.99 4.45
30 0.0100 0.90 1.15 1.40 1.67 1.97 2.28 2.67 2.96 3.42 3.80
31 0.0089 0.77 0.99 1.22 1.40 1.68 1.97 2.28 2.55 2.92 3.24
32 0.0080 0.66 0.86 1.05 1.22 1.42 1.69 1.95 2.22 2.51 2.77
33 0.0071 0.58 0.73 0.92 1.05 1.22 1.42 1.66 1.85 2.14 2.37
34 0.0063 0.50 0.63 0.79 0.92 1.06 1.23 1.42 1.60 1.83 2.02
35 0.0056 0.43 0.54 0.68 0.80 0.92 1.07 1.25 1.37 1.57 1.73
36 0.0050 0.37 0.49 0.59 0.70 0.80 0.95 1.08 1.20 1.34 1.48

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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 0.0388 0.0409 0.0429 46.300 22
9 0.1144 2.9058 0.0490 0.0516 0.0542 36.697 27
10 0.1019 2.5883 0.0618 0.0650 0.0683 29.115 34
11 0.0907 2.3038 0.0779 0.0821 0.0862 23.067 43
12 0.0808 2.0523 0.0982 0.1034 0.1086 18.306 55
13 0.0720 1.8288 0.1237 0.1302 0.1367 14.536 69
14 0.0641 1.6281 0.1561 0.1643 0.1725 11.521 87
15 0.0571 1.4503 0.1967 0.2070 0.2174 9.142 109
16 0.0508 1.2903 0.2485 0.2616 0.2746 7.236 138
17 0.0453 1.1506 0.3125 0.3289 0.3454 5.754 174
18 0.0403 1.0236 0.3948 0.4156 0.4364 4.554 220
19 0.0359 0.9119 0.4976 0.5237 0.5499 3.614 277
20 0.0320 0.8128 0.6262 0.6592 0.6921 2.871 348
21 0.0285 0.7239 0.7895 0.8310 0.8726 2.278 439
22 0.0253 0.6426 1.0018 1.0545 1.1073 1.795 557
23 0.0226 0.5740 1.2555 1.3216 1.3876 1.432 698
24 0.0201 0.5105 1.5872 1.6708 1.7543 1.133 883
25 0.0179 0.4547 2.0013 2.1067 2.2120 0.898 1113
26 0.0159 0.4039 2.5365 2.6700 2.8035 0.709 1411
27 0.0142 0.3607 3.1802 3.3476 3.5149 0.565 1769
28 0.0126 0.3200 4.0391 4.2517 4.4643 0.445 2246
29 0.0113 0.2870 5.0219 5.2862 5.5506 0.358 2793
30 0.0100 0.2540 6.4125 6.7500 7.0875 0.280 3566
31 0.0089 0.2261 8.0956 8.5217 8.9477 0.222 4502
32 0.0080 0.2032 10.0195 10.5469 11.0742 0.179 5572
33 0.0071 0.1803 12.7207 13.3902 14.0597 0.141 7075
34 0.0063 0.1600 16.1565 17.0068 17.8571 0.111 8986
35 0.0056 0.1422 20.4480 21.5242 22.6004 0.088 11372
36 0.0050 0.1270 25.6500 27.0000 28.3500 0.070 14265
37 0.0045 0.1143 30.6667 33.3333 36.0000 0.057 17612
38 0.0040 0.1016 38.8125 42.1875 45.5625 0.045 22290
39 0.0035 0.0889 50.6939 55.1020 59.5102 0.034 29113
40 0.0031 0.0787 64.6202 70.2393 75.8585 0.027 37111
41 0.0028 0.0711 79.2092 86.0969 92.9847 0.022 45489
42 0.0025 0.0635 99.3600 108.0000 116.6400 0.018 57062
43 0.0022 0.0559 128.3058 139.4628 150.6198 0.014 73685
44 0.0020 0.0508 155.2500 168.7500 182.2500 0.011 89159
45 0.00176 0.0447 196.1196 217.9106 239.7017 0.009 115133
46 0.00157 0.0399 246.4603 273.8448 301.2293 0.007 144686
47 0.00140 0.0356 309.9490 344.3878 378.8265 0.005 181957
48 0.00124 0.0315 395.0963 438.9958 482.8954 0.004 231943
49 0.00111 0.0282 493.0606 547.8451 602.6297 0.003 289454
50 0.00099 0.0251 619.8347 688.7052 757.5758 0.003 363877

*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