Project Description
CuNi44 (UNS C72150 / W.Nr. 2.0842) is a copper-nickel alloy (CuNi alloy) characterized by high electrical resistance, high ductility and good corrosion resistance. It is suitable for use at temperatures up to 600℃.
Equivalent Grades
| Trademark | GB | GOST | ASTM | UNS | DIN | W.Nr. | NF | BS | JIS | SS |
| Cuprothal 49 Constantan MWS-294 | CuNi44 (NC050) | МНМц43-0.5 | Alloy 294 | C72150 | 2.0842 | – | – | – | CN49W CN49R | – |
Chemical Composition, %
| Alloy | Ni | Mn | Cu |
| CuNi44 | 44 | 1.0 | Bal |
Typical Mechanical and Physical Properties
| Resistivity, 20℃ μΩ·m | Max.working Temperature, ℃ | Tensile Strength, MPa | Melting Point, ℃ | Specific Heat, J/gk | Thermal Conductivity, 20℃ W/mk | Density, g/cm3 | TCR x10-6/ ℃, 20-600℃ | EMF vs Cu, μV/℃, 0-100 ℃ |
| 0.50±5% | 400 | 420 | 1200 | 0.41 | 23 | 8.9 | <-6 | -43 |
Features
- High resistance consistency
- High ductility
- Good corrosion resistance
- Superior stability
Applications
- Temperature-stable potentiometer
- Industrial rheostat
- Electric motor starter resistance
- Precision resistors
- Strain gauges
