Product Details
Post date : 2012-01-29 08:35:30
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. Chemical Composition
AlloyNi%Mn%Fe%Cu%CuNi4443Max 0.5-Bal.
Physical Data
Density 8.9 g/cm3Specific Heat 0.41(J/kg 20°C)Electrical
Resistivity0.049×10-6ohm.mMelting Point1210°CMaximum Operating
Temperature600°CCoefficient of linear expansion (coeff 10-6/°C)14
from 20 to 1000°C
Typical Mechanical Properties
Mechanical PropertiesCuNi44Tensile Strength420 MpaElongation25%
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