Datasheet

48 Kanthal Appliance Alloys Handbook
Cross
Diameter Resistance Surface sectional
mm at 20 °Ccm
2
/Ω
1)
Weight area area
A-1 APM Ω/m at 20 °C g/m cm
2
/m mm
2
10.0 10.0 0.0185 17017 558 314 78.5
9.5 9.5 0.0205 14590 503 298 70.9
9.27 0.0215 13555 479 291 67.5
8.25 8.25 0.0271 9555 380 259 53.5
8.0 8.0 0.0288 8713 357 251 50.3
7.35 7.35 0.0342 6757 301 231 42.4
7.0 7.0 0.0377 5837 273 220 38.5
6.54 0.0432 4760 239 205 33.6
6.5 6.5 0.0437 4673 236 204 33.2
6.0 6.0 0.0513 3676 201 188 28.3
5.83 0.0543 3372 190 183 26.7
5.5 5.5 0.0610 2831 169 173 23.8
5.0 5.0 0.0738 2127 139 157 19.6
4.75 4.75 0.0818 1824 126 149 17.7
4.62 0.0865 1678 119 145 16.8
4.5 4.5 0.0912 1551 113 141 15.9
4.25 4.25 0.102 1306 101 134 14.2
4.11 0.109 1181 94.2 129 13.3
4.06 0.112 1139 91.9 128 12.9
4.0 4.0 0.115 1089 89.2 126 12.6
3.75 3.75 0.131 897 78.4 118 11.0
3.65 0.139 827 74.3 115 10.5
3.5 3.5 0.151 730 68.3 110 9.62
3.35 0.165 640 62.6 105 8.81
3.25 3.25 0.175 584 58.9 102 8.30
3.2 0.180 558 57.1 101 8.04
Standard Diameter range Resistivity Density
stock items Alloy mm Ωmm
2
m
-1
gcm
-3
■ KANTHAL A-1 10.0-0.050 1.45 7.10
■ KANTHAL APM 10.0-0.20 1.45 7.10
°C 20 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
C
t
1.00 1.00 1.00 1.00 1.00 1.01 1.02 1.02 1.03 1.03 1.04 1.04 1.04 1.04 1.05
To obtain resistance at working temperature, multiply by the factor C
t
in the following table:
KANTHAL A-1, APM
Wire
Cross
Diameter Resistance Surface sectional
mm at 20 °Ccm
2
/Ω
1)
Weight area area
A-1 APM Ω/m at 20 °C g/m cm
2
/m mm
2
3.0 3.0 0.205 459 50.2 94.2 7.07
2.95 0.212 437 48.5 92.7 6.83
2.9 2.9 0.220 415 46.9 91.1 6.61
2.8 2.8 0.235 374 43.7 88.0 6.16
2.65 0.263 317 39.2 83.3 5.52
2.6 2.6 0.273 299 37.7 81.7 5.31
2.5 2.5 0.295 266 34.9 78.5 4.91
2.4 0.321 235 32.1 75.4 4.52
2.34 0.337 218 30.5 73.5 4.30
2.3 2.3 0.349 207 29.5 72.3 4.15
2.25 0.365 194 28.2 70.7 3.98
2.2 2.2 0.381 181 27.0 69.1 3.80
2.05 0.439 147 23.4 64.4 3.30
2.03 0.448 142 23.0 63.8 3.24
2.0 2.0 0.462 136 22.3 62.8 3.14
1.83 0.551 104 18.7 57.5 2.63
1.8 1.8 0.570 99 18.1 56.5 2.54
1.7 1.7 0.639 83.6 16.1 53.4 2.27
1.6 0.695 73.7 14.8 51.2 2.09
1.6 0.721 69.7 14.3 50.3 2.01
1.5 1.5 0.821 57.4 12.5 47.1 1.77
1.4 0.942 46.7 10.9 44.0 1.54
1.3 1.09 37.4 9.42 40.8 1.33
1.2 1.2 1.28 29.4 8.03 37.7 1.13
1.1 1.53 22.6 6.75 34.6 0.950
1.0 1.0 1.85 17.0 5.58 31.4 0.785
1)
cm
2
/Ω = I
2
· C
t
/p (I = Current, C
t
= temperature factor, p = surface load W/cm
2
)