Resistance Wire

Select Gauge:

NOTE: If you are looking for a specific gauge not listed above, please Contact Us to inquire about current lead times.

Alloy Specifications


  • Withstands temperatures up to 300°C
  • Uses: Alloy exhibits low resistivity and high temperature coefficient of resistance. Typical applications include voltage regulators, timing devices, temperature sensitive resistors, temperature compensating devices, motor control, heating wires and cables, precision and vitreous resistors, potentiometers, and low temperature heating applications.
  • Common Name: Alloy 30, CuNi 30, 30 Alloy, MWS-30, Cuprothal 30, HAI-30, Cu-Ni 2, Alloy 230, Nickel Alloy 30


Nickel (Ni) 2%
Chromium (Cr) None/Trace
Iron (Fe) None/Trace
Aluminium (Al) None/Trace
Silicon (Si) None/Trace
Manganese (Mn) None/Trace
Copper (Cu) 98%
Carbon (C) None/Trace
Titanium (Ti) None/Trace
Molybdenum (Mo) None/Trace
Tungsten (W) None/Trace


  • Specific Resistance:  30 ohms/cmf, 4.99 microohm/cm
  • Nom. Temp. Coeff. of Resistance (TCR):  0.0013 ohm/ohm/°C (0-100°C)
  • Density:  0.321 lb/cu. in.
  • Specific Heat (20°C):  0.092 cal/g
  • Nominal Coefficient of Linear Expansion:  16.4 X 10-6 in/in/°C
  • Approx. Melting Point:  1100°C
  • Tensile Strength at 20°C:  60 KPSI Hard, 30 KPSI Annealed
  • Magnetic Attraction:  None