CuNi44
CuNi44 (Cu56Ni44 alloy) characterized by high electrical resistance, high ductility and good corrosion resistance. It is suitable for use at temperatures up to 400°C. Typical applications are temperature-stable potentiometers, industrial rheostats and electric motor starter resistances.
Chemical composition
Nickel % | Copper % | Manganese % |
44 | Bal. | 1 |
Typical mechanical properties (1.0mm)
Yield strength | Tensile Strength | Elongation |
Mpa | Mpa | % |
250 | 420 | 25 |
Typical physical properties
Density (g/cm3) | 8.9 |
Electrical resistivity at 20℃ (Ωmm2/m) | 0.49 |
Temperature factor of resistivity (20℃~600℃) X10-5/℃ | -6 |
Conductivity coefficient at 20℃ (WmK) | 23 |
EMF vs Cu (μV/℃ )(0~100℃ ) | -43 |
Coefficient of thermal expansion
Temperature | Thermal Expansion x10-6/K |
20 ℃- 400℃ | 15 |
Specific heat capacity
Melting point (℃) | 1280 |
Max continuous operating temperature in air (℃) | 400 |
Magnetic properties | Non-magnetic |
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