Datasheet

60 Kanthal Appliance Alloys Handbook
Cross
Dia- Resistance Surface sectional
meter at 20 °Ccm
2
/Ω
1)
Weight area area
mm Ω/m at 20 °C g/m cm
2
/m mm
2
6.0 0.0368 5125 223 188 28.3
5.5 0.0438 3947 188 173 23.8
5.0 0.0530 2966 155 157 19.6
4.75 0.0587 2543 140 149 17.7
4.5 0.0654 2162 126 141 15.9
4.25 0.0733 1821 112 134 14.2
4.0 0.0828 1518 99.3 126 12.6
3.75 0.094 1251 87.3 118 11.0
3.5 0.108 1017 76.0 110 9.62
3.25 0.125 814 65.5 102 8.30
3.0 0.147 641 55.8 94.2 7.07
2.8 0.169 521 48.6 88.0 6.16
2.6 0.196 417 41.9 81.7 5.31
2.5 0.212 371 38.8 78.5 4.91
2.2 0.274 253 30.0 69.1 3.80
2.0 0.331 190 24.8 62.8 3.14
1.9 0.367 163 22.4 59.7 2.84
1.8 0.409 138 20.1 56.5 2.54
1.7 0.458 117 17.9 53.4 2.27
1.6 0.517 97.2 15.9 50.3 2.01
1.5 0.589 80.1 14.0 47.1 1.77
1.4 0.676 65.1 12.2 44.0 1.54
1.3 0.784 52.1 10.5 40.8 1.33
1.2 0.920 41.0 8.93 37.7 1.13
1.1 1.09 31.6 7.51 34.6 0.950
1.0 1.32 23.7 6.20 31.4 0.785
0.95 1.47 20.3 5.60 29.8 0.709
0.90 1.63 17.3 5.03 28.3 0.636
0.85 1.83 14.6 4.48 26.7 0.567
0.80 2.07 12.1 3.97 25.1 0.503
°C 20 100 200 300 400 500 600 700 800 900 1000 1100
N40 C
t
1.00 1.03 1.06 1.10 1.12 1.15 1.17 1.19 1.21 1.22 1.23 1.24
N20 C
t
1.00 1.04 1.10 1.14 1.17 1.21 1.12 1.16 1.28 1.30 1.32 1.34
To obtain resistance at working temperature, multiply by the factor C
t
in the following table:
NIKROTHAL 40, 20
Wire
Cross
Dia- Resistance Surface sectional
meter at 20 °Ccm
2
/Ω
1)
Weight area area
mm Ω/m at 20 °C g/m cm
2
/m mm
2
0.75 2.35 10.01 3.49 23.6 0.442
0.70 2.70 8.14 3.04 22.0 0.385
0.65 3.13 6.52 2.62 20.4 0.332
0.60 3.68 5.12 2.23 18.8 0.283
0.55 4.38 3.95 1.88 17.3 0.238
0.50 5.30 2.97 1.55 15.7 0.196
0.475 5.87 2.54 1.40 14.9 0.177
0.45 6.54 2.16 1.26 14.1 0.159
0.425 7.33 1.82 1.12 13.4 0.142
0.40 8.28 1.52 0.993 12.6 0.126
0.375 9.4 1.25 0.873 11.8 0.110
0.35 10.8 1.017 0.760 11.0 0.0962
0.32 12.9 0.777 0.635 10.1 0.0804
0.30 14.7 0.641 0.558 9.42 0.0707
0.28 16.9 0.521 0.486 8.80 0.0616
0.26 19.6 0.417 0.419 8.17 0.0531
0.25 21.2 0.371 0.388 7.85 0.0491
0.24 23.0 0.328 0.357 7.54 0.0452
0.23 25.0 0.289 0.328 7.23 0.0415
0.22 27.4 0.253 0.300 6.91 0.0380
0.21 30.0 0.220 0.274 6.60 0.0346
0.20 33.1 0.190 0.248 6.28 0.0314
0.19 36.7 0.163 0.224 5.97 0.0284
0.18 40.9 0.138 0.201 5.65 0.0254
0.17 45.8 0.117 0.179 5.34 0.0227
0.16 51.7 0.0972 0.159 5.03 0.0201
0.15 58.9 0.0801 0.140 4.71 0.0177
0.14 67.6 0.0651 0.122 4.40 0.0154
0.13 78.4 0.0521 0.105 4.08 0.0133
To get NIKROTHAL 20, multiply the figures in the table with:
Resistance
at 20 °Ccm
2
/Ω Weight
Ω/m at 20 °C g/m
0.913 1.095 0.987
Diameter range Resistivity Density
Alloy mm Ωmm
2
m
-1
gcm
-3
NIKROTHAL 40 6.0-0.10 1.04 7.90
NIKROTHAL 20 6.0-0.10 0.95 7.80
1)
cm
2
/Ω = I
2
· C
t
/p (I = Current, C
t
= temperature factor, p = surface load W/cm
2
)