Coefficients of Specific Resistance

Chapter 3 - Conductor And Insulator Tables

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Specific resistance at 20o C: 

Material Element/Alloy ohm-cmil/ft ohm-cm10-6
Nichrome Alloy 675 112.2
Nichrome V Alloy 650 108.1
Manganin Alloy 290 48.21
Constantan Alloy 272.97 45.38
Steel* Alloy 100 16.62
Platinum Element 63.16 10.5
Iron Element 57.81 9.61
Nickel Element 41.69 6.93
Zinc Element 35.49 5.90
Molybdenum Element 32.12 5.34
Aluminum Element 15.94 2.650
Gold Element 13.32 2.214
Copper Element 10.09 1.678
Silver Element 9.546 1.587
       

* = Steel alloy at 99.5 percent iron, 0.5 percent carbon.

 

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