Material Shape
Round Wire
Range of Application
Electrical and electronic
Certification
ISO9001, CCC, RoHS
Serves
Small Order Accepted
Resisivity
0.12milliohm/M
Transport Package
Packing in Coil Cartons, Pallet, Spools, Coils
Copper Nickel Alloys Wire Constantan/Konstantan Wire CuNi44/CuNi40/CuNi45 for Shunt
As a big manufacturer and exporter in China on the line of electric resistance alloy, we can supply all kinds of electric resistance alloy wire and strips (resistance steel wire and strips),
Material: CuNi1, CuNi2, CuNi6, CuNi8, CuNi14, CuNi19, CuNi23, CuNi30, CuNi34, CuNi44
General Description
Due to has high tensile strength and increased resistivity values, TANKII copper nickel alloy wires are the first choice for applications as resistance wires. with the different nickel amount in this product range, the characteristics of the wire can be chosen according to your requirements. Copper nickel alloy wires are available as bare wire, or enamelled wire with any insulation and self-bonding enamel. Furthermore, litz wire made of enamelled copper nickel alloy wire are available.
Features
1. Higher resistance than copper
2. High tensile strength
3. Good bending proof performance
Application
1. Heating applications
2. Resistance wire
3. Applications with high mechanical requirements | Characteristic | Resistivity ( 200C μ Ω . m) | Max. working Temperature ( 0C) | Tensile Strength (Mpa) | Melting point (0C) | Density ( g/cm3) | TCR x10-6/ 0C (20~600 0C) | EMF vs Cu (μ V/ 0C) (0~100 0C) |
| Alloy Nomenclature |
| NC003 (CuNi1) | 0.1 | 200 | ≥ 250 | 1095 | 8.9 | < 100 | -12 |
| Physical Properties | Metric | Comments |
| Density | 8.94 g/cc | |
| Mechanical Properties | Metric | Comments |
| Tensile Strength, Ultimate | 262 - 531 MPa | |
| Tensile Strength, Yield | 276 - 524 MPa | Depending on temper |
| Elongation at Break | 46.0 % | in 50.8 mm. |
| Modulus of Elasticity | 115 GPa | |
| Poissons Ratio | 0.310 | Calculated |
| Machinability | 20 % | UNS C36000 (free-cutting brass) = 100% |
| Shear Modulus | 44.0 GPa | |
| Electrical Properties | Metric | Comments |
| Electrical Resistivity | 0.0000120 ohm-cm
@Temperature 20.0 ° C | |
| Thermal Properties | Metric | Comments |
| CTE, linear | 17.5 µ m/m-° C
@Temperature 20.0 - 300 ° C | |
| Specific Heat Capacity | 0.380 J/g-° C | |
| Thermal Conductivity | 64.0 W/m-K
@Temperature 20.0 ° C | |
| Melting Point | < = 1125 ° C | Liquidus |
| Liquidus | 1125 ° C | |
| Processing Properties | Metric | Comments |
| Annealing Temperature | 565 - 815 ° C | |
| Hot-Working Temperature | 815 - 950 ° C | |
| Component Elements Properties | Metric | Comments |
| Copper, Cu | > = 91.2 % | |
| Iron, Fe | 1.30 - 1.70 % | |
| Lead, Pb | < = 0.050 % | |
| Manganese, Mn | 0.30 - 0.80 % | |
| Nickel, Ni | 4.80 - 6.20 % | |
| Zinc, Zn | < = 1.0 % | |
CuNi44 Chemical Content, %
| Ni | Mn | Fe | Si | Cu | Other | ROHS Directive |
| Cd | Pb | Hg | Cr |
| 44 | 1% | 0.5 | - | Bal | - | ND | ND | ND | ND |
Mechanical Properties| Max Continuous Service Temp | 400ºC |
| Resisivity at 20ºC | 0.49±5%ohm mm2/m |
| Density | 8.9 g/cm3 |
| Thermal Conductivity | -6(Max) |
| Melting Point | 1280ºC |
| Tensile Strength,N/mm2 Annealed,Soft | 340~535 Mpa |
| Tensile Strength,N/mm3 Cold Rolled | 680~1070 Mpa |
| Elongation(anneal) | 25%(Min) |
| Elongation(cold rolled) | ≥Min)2%(Min) |
| EMF vs Cu, μV/ºC (0~100ºC) | -43 |
| Micrographic Structure | austenite |
| Magnetic Property | Non |
Application of Constantan
Constantan is a copper-nickel alloy that contains specific minor amounts of additional
elements to achieve precise values for the temperature coefficient of resistivity. Careful
control of melting and conversion practices results in a very low level of pinholes at
ultra-thin thicknesses. The alloy is used extensively for foil resistors and strain gauges.
