Our CuNi2, CuNi14, and CuNi23 resistance wires, with nickel contents of ~2%, ~14%, and ~23% respectively, are engineered for high-tensile strength thermal relays and demanding applications. These copper-nickel alloys offer a sweet spot of resistivity, durability, and thermal stability, making them perfect for environments where reliability is critical. CuNi2 is great for low-resistance setups, CuNi14 balances strength and conductivity, and CuNi23 shines in high-resistance applications. We craft these wires with precision, ensuring consistent performance, excellent corrosion resistance, and easy fabrication for thermal relays, heating systems, and more.
The copper-nickel alloy wire market is booming, with the global copper alloy sector projected to hit USD 25.85 billion by 2034. Demand is surging in industries like electrical, automotive, and industrial automation, driven by the need for durable, high-strength materials. CuNi2, CuNi14, and CuNi23 are gaining traction for their versatility in thermal relays and heating systems, especially as industries push for compact, efficient components. Sustainability is also a key trend—our production process minimizes waste and aligns with the industry’s shift toward eco-friendly solutions.
Properties Material | Resistivity 200c μΩ.m | Max working temperature (℃) | Tensile strength (Mpa) | Melting point (℃） | Density (g/cm3) | TCR *10-6/℃ (20-600℃） | EMF vs Cu (μV/℃） （0-100℃） |
CuNi1 | 0.03 | 200 | 210 | 1085 | 8.9 | ＜100 | -8 |
CuNi2 | 0.05 | 200 | 220 | 1090 | 8.9 | ＜120 | -12 |
CuNi6 | 0.1 | 220 | 250 | 1095 | 8.9 | ＜60 | -18 |
CuNi8 | 0.12 | 250 | 270 | 1097 | 8.9 | ＜57 | -22 |
CuNi10 | 0.15 | 250 | 290 | 1100 | 8.9 | ＜50 | -25 |
CuNi14 | 0.2 | 300 | 310 | 1115 | 8.9 | ＜30 | -28 |
CuNi19 | 0.25 | 300 | 340 | 1135 | 8.9 | ＜25 | -32 |
CuNi23 | 0.3 | 300 | 350 | 1150 | 8.9 | ＜16 | -34 |
CuNi30 | 0.35 | 350 | 400 | 1170 | 8.9 | ＜10 | -37 |
CuNi34 | 0.4 | 350 | 400 | 1180 | 8.9 | 0 | -39 |
CuNi44 | 0.5 | 400 | 420 | 1200 | 8.9 | ＜-6 | -43 |
Size Range | |
Wire | 0.08-7.5mm |
Ribbon | (0.05-0.35)*(0.5-6.0)mm |
Strip | (0.50-2.5)*(5-180)mm |
Rod | 8-50mm |
For more other size details, pls directly contact us
Our CuNi2, CuNi14, and CuNi23 wires are workhorses in thermal relays, ensuring precise temperature control and overload protection in electrical systems. CuNi2 is ideal for low-resistance circuits, CuNi14 excels in industrial heating cables, and CuNi23 is perfect for high-resistance applications like precision resistors. These wires also find use in underfloor heating, automotive sensors, and marine equipment, thanks to their corrosion resistance and ability to handle temperatures up to 300°C (CuNi23). Their high tensile strength makes them a go-to for rugged environments.
Why Our CuNi Wire s Stand Out
Our CuNi2, CuNi14, and CuNi23 wires outperform others with superior tensile strength and resistivity consistency, critical for thermal relays. We’ve fine-tuned our manufacturing to deliver wires with excellent ductility and corrosion resistance, making them easy to work with and long-lasting. Compared to others, our wires offer better thermal stability and a wider range of sizes—0.1mm to 8mm for round wires and custom flat profiles. We also prioritize fast delivery and competitive pricing, ensuring you get top-quality wire without delays or budget strain.
Comparison Table
Parameter | Our CuNi2 Wire | Our CuNi14 Wire | Our CuNi23 Wire | Competitor A | Competitor B |
|---|---|---|---|---|---|
Nickel Content | ~2% | ~14% | ~23% | ~2-23% | ~2-23% |
Resistivity (μΩ·cm) | 0.05 | 0.20 | 0.30 | 0.06-0.32 | 0.07-0.31 |
Max Operating Temp (°C) | 200 | 250 | 300 | 190-280 | 200-290 |
Corrosion Resistance | High | Excellent | Excellent | Moderate | High |
Ductility | Excellent | High | High | Good | Moderate |
Tensile Strength (N/mm²) | ~280 | ~350 | ~400 | ~260-380 | ~270-390 |
Weldability | Excellent | Excellent | High | Good | Good |
Availability (Sizes) | 0.1-8mm (custom) | 0.1-8mm (custom) | 0.1-8mm (custom) | 0.2-7mm | 0.3-7mm |
About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.
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FAQs
Why are CuNi2, CuNi14, and CuNi23 great for thermal relays?
Their high tensile strength and stable resistivity ensure reliable performance in temperature-sensitive systems.What’s the difference between CuNi2, CuNi14, and CuNi23?
CuNi2 has low resistivity for light circuits, CuNi14 balances strength and conductivity, and CuNi23 offers high resistance for precision applications.Can these wires handle high temperatures?
Yep—CuNi2 up to 200°C, CuNi14 to 250°C, and CuNi23 to 300°C.Are these wires corrosion-resistant?
Absolutely, they’re built to resist moisture and chemicals, perfect for harsh environments.What industries use these CuNi wires?
They’re big in electrical, automotive, and marine for relays, resistors, and heating systems.Can you customize these wires?
Totally, we offer round wires from 0.1mm to 8mm and custom flat profiles to match your specs.How fast can you deliver these wires?
We’re quick—most orders ship within 1-2 weeks, depending on customization and volume.Are these wires cost-effective?
You bet—they deliver top-notch durability and performance at budget-friendly prices.