Datasheet
66 Kanthal Appliance Alloys Handbook
Alloy 20 °C 100 °C 200 °C 300 °C 400 °C 500 °C 600 °C
CUPROTHAL 49 1.000 1.002 1.002 1.001 1.005 1.017 1.037
To obtain resistance at working temperature, multiply by the factor C
t
in the following table:
Copper-Nickel
Ribbon
Resis-
Cross
Thick- tance Surface
sectional
Width ness at 20 °Ccm
2
/Ω
1)
Weight area area
mm mm Ω/m at 20 °C g/m cm
2
/m mm
2
4 1.0 0.133 751 32.8 100 3.68
0.90 0.148 662 29.5 98.0 3.31
0.80 0.166 577 26.2 96.0 2.94
0.70 0.190 494 22.9 94.0 2.58
0.60 0.222 415 19.7 92.0 2.21
0.50 0.266 338 16.4 90.0 1.84
0.40 0.333 264 13.1 88.0 1.47
0.30 0.444 193.8 9.83 86.0 1.10
0.20 0.666 126.2 6.55 84.0 0.736
0.15 0.888 93.5 4.91 83.0 0.552
0.10 1.33 61.6 3.28 82.0 0.368
3 1.0 0.178 451 24.6 80.0 2.76
0.90 0.197 395 22.1 78.0 2.48
0.80 0.222 342 19.7 76.0 2.21
0.70 0.254 292 17.2 74.0 1.93
0.60 0.296 243 14.7 72.0 1.66
0.50 0.355 197 12.3 70.0 1.38
0.40 0.444 153 9.83 68.0 1.10
0.30 0.592 112 7.37 66.0 0.828
0.20 0.888 72.1 4.91 64.0 0.552
0.15 1.18 53.2 3.68 63.0 0.414
0.10 1.78 34.9 2.46 62.0 0.276
2.5 1.0 0.213 329 20.5 70.0 2.30
0.90 0.237 287 18.4 68.0 2.07
0.80 0.266 248 16.4 66.0 1.84
0.70 0.304 210 14.3 64.0 1.61
0.60 0.355 175 12.3 62.0 1.38
0.50 0.426 141 10.2 60.0 1.15
0.40 0.533 109 8.19 58.0 0.920
0.30 0.710 78.9 6.14 56.0 0.690
0.20 1.07 50.7 4.09 54.0 0.460
0.15 1.42 37.3 3.07 53.0 0.345
0.10 2.13 24.4 2.05 52.0 0.230
2.0 1.0 0.266 225 16.4 60.0 1.84
0.90 0.296 196.0 14.7 58.0 1.66
0.80 0.333 168 13.1 56.0 1.47
0.70 0.380 142 11.5 54.0 1.29
0.60 0.444 117 9.83 52.0 1.10
0.50 0.533 93.9 8.19 50.0 0.920
0.40 0.666 72.1 6.55 48.0 0.736
0.30 0.888 51.8 4.91 46.0 0.552
0.20 1.33 33.0 3.28 44.0 0.368
0.15 1.78 24.2 2.46 43.0 0.276
0.10 2.66 15.77 1.64 42.0 0.184
Resis-
Cross
Thick- tance Surface
sectional
Width ness at 20 °Ccm
2
/Ω
1)
Weight area area
mm mm Ω/m at 20 °C g/m cm
2
/m mm
2
1.8 1.0 0.296 189 14.7 56.0 1.66
0.90 0.329 164 13.3 54.0 1.49
0.80 0.370 141 11.8 52.0 1.32
0.70 0.423 118 10.3 50.0 1.16
0.60 0.493 97.3 8.84 48.0 0.994
0.50 0.592 77.7 7.37 46.0 0.828
0.40 0.740 59.5 5.90 44.0 0.662
0.30 0.986 42.6 4.42 42.0 0.497
0.20 1.48 27.0 2.95 40.0 0.331
0.15 1.97 19.77 2.21 39.0 0.248
0.10 2.96 12.84 1.47 38.0 0.166
1.5 1.0 0.355 141 12.3 50.0 1.38
0.90 0.395 122 11.1 48.0 1.24
0.80 0.444 104 9.83 46.0 1.10
0.70 0.507 86.7 8.60 44.0 0.966
0.60 0.592 71.0 7.37 42.0 0.828
0.50 0.710 56.3 6.14 40.0 0.690
0.40 0.888 42.8 4.91 38.0 0.552
0.30 1.18 30.4 3.68 36.0 0.414
0.20 1.78 19.2 2.46 34.0 0.276
0.15 2.37 13.9 1.84 33.0 0.207
0.10 3.55 9.01 1.23 32.0 0.138
0.090 3.95 8.06 1.11 31.8 0.124
0.080 4.44 7.12 0.983 31.6 0.110
1.2 0.80 0.555 72.1 7.86 40.0 0.883
0.70 0.634 59.9 6.88 38.0 0.773
0.60 0.740 48.7 5.90 36.0 0.662
0.50 0.888 38.3 4.91 34.0 0.552
0.40 1.11 28.8 3.93 32.0 0.442
0.30 1.48 20.3 2.95 30.0 0.331
0.20 2.22 12.6 1.97 28.0 0.221
0.15 2.96 9.12 1.47 27.0 0.166
0.10 4.44 5.86 0.983 26.0 0.110
0.090 4.93 5.23 0.884 25.8 0.099
0.080 5.55 4.61 0.786 25.6 0.088
0.070 6.34 4.01 0.688 25.4 0.077
1.0 0.80 0.67 54.1 6.55 36.0 0.736
0.70 0.76 44.7 5.73 34.0 0.644
0.60 0.89 36.0 4.91 32.0 0.552
0.50 1.1 28.2 4.09 30.0 0.460
0.40 1.3 21.0 3.28 28.0 0.368
0.30 1.8 14.6 2.46 26.0 0.276
0.20 2.7 9.01 1.64 24.0 0.184
0.15 3.6 6.48 1.23 23.0 0.138
Resistivity Density
Alloy Ωmm
2
m
-1
gcm
-3
CUPROTHAL 49 0.49 8.90
1)
cm
2
/Ω = I
2
· C
t
/p (I = Current, C
t
= temperature factor, p = surface load W/cm
2
) (cont.)