CuNi44, also called Constantan, has a very low temperature
coefficient, high electrical resistance, high ductility and
non-corroding properties. It is suitable for use at temperatures up
to 600°C (1110°F). As a very malleable, very ductile alloy, it has
a very good resistance to oxidation.
The alloy is non-magnetic. It is suitable for electrical resistors,
potentiometers, heating wires, heating cables and mats. Ribbons are
used for heating of bimetals. Another field of application is
manufacturing of thermocouples because it develops a high
electromotive force (EMF) in association with others metals.
Maximum Operating Temperature
Coefficient of linear expansion (coeff 10-6/°C)
14 from 20 to 1000°C
Typical Mechanical Properties