Feature(may vary by option.)
●Wnr. 2.0842; UNS C72150; DIN 17664;
●Areas of application: manufacture of thermocouples and heating resistors (from up to 400-500°C); manufacture of rheostats and potentiometers; production of measuring resistors;
●Features: high specific resistance; low temperature coefficient of specific resistance; high seebeck coefficient; good ductility; good expansion coefficient; high corrosion and oxidation resistance;
●Density: 8.90 g/cm³; melting point 1280 °C; thermal conductivity 23 W/m K; electric. Resistance 0.49 Ω mm²/m; surface smooth (may contain handling or memory marks).
●With supplied wire length, tolerance may be +/-2% of the ordered quantity
[0.07mm 500 metres]
Description
Constant wire is produced from a copper-nickel-manganese alloy. This consists of approx. 59% copper with added 39-41% nickel and 1-2% manganese and is non-magnetic. The resistance wire with the material number 2.0842 has a low temperature coefficient of electrical resistance and is (besides manganine) one of the resistance alloys.
2.0842 is easy to work with, welding and brazing. It is also very resistant to corrosion and oxidation. Constant wire is not suitable for precision electrical resistors. Manganine can be recommended for this. Constantan wire has high ductility.
Typical applications of CuNi44 are:
- Production of thermocouples and heating resistors (with operating temperature of up to 400-500°C);
- Production of rheostats and potentiometers;
- Production of measuring resistors.
Constant wire is characterised by the following features:
- High specific resistance;
- low temperature coefficient of specific resistance;
- Good ductility.
- Good expansion coefficient.
- High corrosion and oxidation resistance.