Cuprothal 15 Resistance Wire

Cuprothal 15 Resistance wire is a copper-nickel alloy (CuNi alloy) that offers moderate resistivity for operations performed at temperatures up to 400oC (750oF). It offers lower resitsitivty as well as low temperature coefficient of resistance.

Cuprothal 15 Resistance wire is preferred for using in the seawater applications to avoid corrosion of alloy and biofouling. It offers extensive resistance to the chloride solutions and shows excellent welding character.

Specification of Cuprothal 15 Resistance wire:
Diameter 0.05mm-10.0mm (0.002inch-0.3937inch)

Chemical composition:
Ni 11.0%
Cu Bal.


Physical properties of Cuprothal 15 Resistance wire:
Density g/cm3 8.9
Electrical resistivity at 20°C Ω mm2/m 0.15
Melting Point 1100oC
Magnetic Properties Non magnetic
Highest operating temperature 400oC
Specific heat capacity at 20oC 0.380 Kj Kg-1K-1

Mechanical properties of Cuprothal 15 Resistance wire:
Yield Strength 130 MPa
Tensile Strength 300 MPa
Elongation 30
Thermal conductivity at 20oC 60 Wm-1K-1

The Copper-Nickel alloys are used as fitting materials in the various cooling circuits. Thus it is viable to use them as a protection material.
Applications of Cuoprothal 15 wire:
1.Manufacturing heating wires, electric fuse, resistor, shunt
2.Conrollers
3.Core of low temperature heater