Specialty Alloys
Copper-Nickel Resistance Alloys
CuNi1 through CuNi44 low-resistivity alloys for shunt resistors, heating elements, thermocouple compensation leads and precision instrumentation. Available in wire, strip and bar forms.
Available Grades
Resistance AlloysCuNi1
- Resistivity
- 0.03 Ω·mm²/m
- Application
- Shunt resistors, bus bars
CuNi2
- Resistivity
- 0.05 Ω·mm²/m
- Application
- Low-resistance heating elements
CuNi6
- Resistivity
- 0.10 Ω·mm²/m
- Application
- Thermocouple compensation (Type E/J)
CuNi8
- Resistivity
- 0.12 Ω·mm²/m
- Application
- Precision shunt resistors
CuNi10
- Resistivity
- 0.15 Ω·mm²/m
- Application
- Corrosion-resistant heating wire
CuNi14
- Resistivity
- 0.20 Ω·mm²/m
- Application
- Industrial heating elements
CuNi19
- Resistivity
- 0.25 Ω·mm²/m
- Application
- Medium-resistance heating
CuNi23
- Resistivity
- 0.30 Ω·mm²/m
- Application
- Rheostats and motor controls
CuNi30
- Resistivity
- 0.35 Ω·mm²/m
- Application
- Low-temperature heating elements
CuNi34
- Resistivity
- 0.38 Ω·mm²/m
- Application
- Thermocouple leads
CuNi40
- Resistivity
- 0.48 Ω·mm²/m
- Application
- Precision instrument wire
CuNi44
- Resistivity
- 0.49 Ω·mm²/m
- Application
- Constantan — thermocouple & strain gauge
Available Forms
Wire (Ø0.02–8.0 mm) Strip (0.05–3.0 mm) Bar & Rod Ribbon
Key Properties
- ✓ Low temperature coefficient of resistance (TCR)
- ✓ Excellent corrosion resistance in mild environments
- ✓ Low thermal EMF against copper
- ✓ Good workability for fine wire drawing
- ✓ Non-magnetic and solderable
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