Resistance alloys
- Nickel-Chromium Alloys
- Iron-Chromium-Aluminium Alloys
- Copper-Nickel Alloys
- Nickel Alloys
- Iron-Nickel Alloys
For the manufacturing of low temperatures electric resistances so as heating principally destined cables , shunts, resistances for automobile, they have a maximum operating temperature of 400 ° C.
They do not therefore intervene in the field of resistances for industrial furnaces.
Those are alloys of chemical composition copper + nickel with addition of manganese with a low resistivity (from 0,49 up to 0,05 Ohm mm² / m).
The most known, CuNi 44 (also called Constantan) has the advantage of a very low temperature coefficient.
Their advantages are the following:
Very good resistance to corrosion
Very good malleability
Very good solderability
