Copper Nickel Alloy Wire (CuNi)
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Magnesium content ranging from 0.10% to 0.4%
Copper Alloy Conductor
Copper nickel alloy wire is produced by alloying copper with nickel through a smelting process. The alloy is then processed through drawing, annealing, electroplating, and stranding to create wires in various configurations. The copper nickel alloy wire is available in single wire, stranded wire, multi-strand ropes, and parallel multi-wires, with diameters ranging from 0.08mm to 2.0mm.
Typical Applications
- Low voltage electrical products like circuit breakers, heating blankets, and thermal overload relays, operating at temperatures up to 200°C.
- Aerospace and electronics components, where high performance and resistance to environmental factors are critical.
- Applications requiring high-temperature stability and resistance to corrosion, ensuring long-term reliability in demanding environments.
Physical Properties
| Density (g/cm³) | 8.9 |
| Electrical Conductivity at 20℃ (Ω.mm²/m) | 0.03 |
| Temperature Coefficient of Resistance (20℃-600℃) ×10⁻⁵/℃ | < 100 |
| Conductivity Coefficient at 20℃ (W/mK) | 145 |
| Electromotive Force Against Copper (μV/℃) (0-100℃ ) | -8 |
Specific Heat Capacity
| Temperature (℃) | 20 |
| Specific Heat (J/gK) | 0.380 |
| Melting Point (℃) | 1085 |
| Max. Continuous Operating Temperature in Air (℃) | 200 |
| Magnetic Properties | Non magnetic |
Mechanical Properties (1.0mm)
| Yield Strength (Mpa) | 90 |
| Tensile Strength (Mpa) | 210 |
| Elongation (%) | 25 |
Coefficient of Thermal Expansion
| Temperature (℃) | 20 to 400 |
| Thermal Expansion ×10⁻⁶/K | 17.5 |
Corrosion Resistance Performance
| Alloy | Corrosion Resistance at 20℃ | Corrosion Resistance at Max. Working Temperature 200°C | ||||
| Air and Other Oxygen-Containing Gases | Nitrogen Containing Gas | Oxidizability of Sulfur-Containing Gas | Reducibility of Sulfur-Containing Gas | Carburization | ||
| CuNi1 | Good | Poor | Poor | Poor | Poor | Good |
Types of CuNi Conductor We Offer
| Conductor Type | Conductor Size (mm) | |
| Wire | Diameter:0.06-8 | |
| Ribbon | Width:0.4-40 | Thickness:0.05-2.9 |
| Strip | Width:8-200 | Thickness:0.1-3.0 |
| Foil | Width:6-120 | Thickness:0.005-0.1 |
| Bar | Diameter:8-100 | Length:50-1000 |
General Product Information
| Item Code | Electrical Resistivity | Max. Operating Temperature (℃) | Temperature Coefficient of Resistance | Thermal Electromotive Force Against Copper (0-100℃) | Chemical Composition (%) | Mechanical Properties | ||||
| Tensile Strength (N/mm²) | Elongation (%) | |||||||||
| Mn | Ni | Cu | Diameter ≤1.00mm | Diameter >1.00mm | ||||||
| NC003 | 0.03 | 200 | <100 | -8 | - | 1 | Balance | 210 | >18 | >25 |
| NC005 | 0.05 | 200 | <120 | -12 | - | 2 | Balance | 220 | >18 | >25 |
| NC010 | 0.10 | 220 | <60 | -18 | - | 6 | Balance | 250 | >18 | >25 |
| NC012 | 0.12 | 250 | <57 | -22 | - | 8 | Balance | 270 | >18 | >25 |
| NC015 | 0.15 | 250 | <50 | -25 | - | 10 | Balance | 290 | >20 | >25 |
| NC020 | 0.20 | 300 | <38 | -28 | 0.3 | 14.2 | Balance | 310 | >20 | >25 |
| NC025 | 0.25 | 300 | <25 | -32 | 0.5 | 19 | Balance | 340 | >20 | >25 |
| NC030 | 0.30 | 300 | <16 | -34 | 0.5 | 23 | Balance | 350 | >20 | >25 |
| NC035 | 0.35 | 350 | <10 | -37 | 1.0 | 30 | Balance | 400 | >20 | >25 |
| NC040 | 0.40 | 350 | 0 | -39 | 1.0 | 34 | Balance | 400 | >20 | >25 |
| NC050 | 0.49 | 400 | <-6 | -43 | 1.0 | 44 | Balance | 420 | >20 | >25 |
Features
- Copper-nickel alloy wire provides superior strength and resistance to bending compared to traditional copper wire. The addition of nickel improves its high-temperature stability and corrosion resistance, ensuring reliability in demanding applications.
- Nickel-plated copper wire provides excellent oxidation resistance, thermal stability, and corrosion resistance. These properties are especially beneficial for high-frequency applications, where minimizing signal loss is critical.
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