Sell cuni44 wires ribbons @China (Mainland)
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
|
Alloy |
Ni% |
Mn% |
Fe% |
Cu% |
|
CuNi44 |
43 |
Max 0.5 |
- |
Bal. |
Physical Data
|
Density |
8.9 g/cm3 |
|
Specific Heat |
0.41(J/kg 20°C) |
|
Electrical Resistivity |
0.049×10-6ohm.m |
|
Melting Point |
1210°C |
|
Maximum Operating Temperature |
600°C |
|
Coefficient of linear expansion (coeff 10-6/°C) |
14 from 20 to 1000°C |
Typical Mechanical Properties
|
Mechanical Properties |
CuNi44 |
|
Tensile Strength |
420 Mpa |
|
Elongation |
25% |
Post by Michael Wang Minerals & Metallurgy @2011-12-26 14:35:27
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