CuNi44 NC050 Nickel Alloy Wire Valves Precision Resistance Parts Material
(Resistance heating wire and resistance wire)
(Common Name:CuNi44,NC50)
NC050 is a copper-nickel alloy (Cu56Ni44 alloy) with low resistivity for use at temperatures up to 400°C.
The ductility of copper-nickel alloy is very good, so it can be used in shipbuilding and petrochemical industry. Some electrical appliances and meters also use the ductility of copper-nickel alloys to manufacture parts. Copper-nickel alloys are mostly used in industrial production. Some valves and some precision resistance parts will be made of copper-nickel alloys.
Copper Nickel Alloy Production Standard(GB/T1234-95)
| Performance Brand |
NC020
CuNi14 |
NC025
CuNi19 |
NC030
CuNi23 |
NC035
CuNi30 |
NC040
CuNi34 |
NC050
CuNi44 |
|
| Main Chemical Content% | Ni | 14.2 | 19 | 23 | 30 | 34 | 44 |
| Mn | 0.3 | 0.5 | 0.5 | 1.0 | 1.0 | 1.0 | |
| Cu | Bal. | Bal. | Bal. | Bal. | Bal. | Bal. | |
| Element Max Working TemperatureºC | 300 | 300 | 300 | 350 | 350 | 400 | |
| Density g/cm3 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | |
| Resistivity Ωmm2/m, at 20ºC | 0.20±5% | 0.25±5% | 0.30±5% | 0.35±5% | 0.40±5% | 0.49±5% | |
|
Temperature factor of resistivity 10-5/ºC(200-600ºC) |
<38 | <25 | <16 | <10 | -0 | <-6 | |
| Melting Point ºC | 1115 | 1135 | 1150 | 1170 | 1180 | 1280 | |
| Tensile Strength MPa | ≥310 | ≥340 | ≥350 | ≥400 | ≥400 | ≥420 | |
| Enlogation%(>1.0) | ≥25 | ≥25 | ≥25 | ≥25 | ≥25 | ≥25 | |
|
EMF VS Copper
V/ºC(0-100ºC) |
-28 | -32 | -34 | -37 | -39 | -43 | |
| Specific heat capacity j/gk(20ºC) | 0.38 | 0.38 | 0.38 | 0.39 | 0.40 | 0.41 | |
| Conductivity coefficient w/mk at20ºC | 48 | 38 | 33 | 27 | 25 | 23 | |
| Organizational attribute | Austenitic | Austenitic | Austenitic | Austenitic | Austenitic | Austenitic | |
| Magnetic | None-Magnetic | None-Magnetic | None-Magnetic | None-Magnetic | None-Magnetic | None-Magnetic | |
|
Alloy wire
Dia/mm |
Apply to the number of wire cores | The nominal cross-sectional area of the wire core /mm² |
| 0.2 | 7 | 0.2 |
| 0.3 | 7 | 0.5 |
| 0.41 | 19 | 2.5 |
| 0.43 | 7 | 1.0 |
| 0.52 | 7 | 1.5 |
| 0.52 | 1 | 0.2 |
| 0.8 | 1 | 0.5 |
| 1.13 | 1 | 1.0 |
| 1.38 | 1 | 1.5 |
| 1.78 | 1 | 2.5 |