Precision CuNi14 NC020 Wire for Thermal Overload Relays and Resistors

Our Precision CuNi14 NC020 Wire is a game-changer in the world of copper-nickel alloys, designed specifically for applications like thermal overload relays, resistors, and heating cables. With a nickel content of about 14%, this alloy strikes the perfect balance between low electrical resistivity and robust thermal stability, making it a go-to choice for industries that demand reliability and precision. Whether you’re crafting components for low-voltage circuit breakers or designing heating systems for harsh environments, our CuNi14 NC020 wire delivers consistent performance every time.

This wire isn’t just another alloy—it’s engineered for versatility. It’s corrosion-resistant, easy to weld, and a breeze to process, which means manufacturers can shape it into wires, ribbons, or strips without breaking a sweat. With a resistivity of 0.20 μΩ·m at 20°C and a maximum operating temperature of 300°C, it’s built to handle the heat (literally) while maintaining stable electrical properties. Plus, its tensile strength of 310 MPa ensures it can take a beating without losing its form. From marine to automotive applications, this wire is a reliable partner for your next project.

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What makes our CuNi14 NC020 wire special? It’s all about consistency and durability. The alloy’s low temperature coefficient of resistance (TCR) of less than 30 x10⁻⁶/°C ensures that its electrical properties stay steady even when temperatures fluctuate. This is a big deal for applications like thermal overload relays, where precision is non-negotiable. Add to that its excellent corrosion resistance, and you’ve got a material that thrives in tough conditions, like marine or industrial settings where moisture and salt could wreak havoc on lesser alloys.

We produce this wire with precision in mind, offering a range of sizes to fit your needs—wires from 0.05mm to 10mm in diameter, ribbons as thin as 0.05mm, and strips up to 250mm wide. Whether you need something fine for intricate electronics or robust for heavy-duty resistors, we’ve got you covered. Our wire undergoes hydrogen annealing to ensure a bright, smooth surface and soft annealed condition, making it easy to work with during fabrication.

Parameter:

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

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The copper-nickel alloy market is buzzing, and for good reason. Demand for high-performance materials in electrical, automotive, marine, and aerospace industries is skyrocketing as manufacturers seek reliable solutions for increasingly complex systems. According to industry insights, the global market for copper-nickel alloys is projected to grow steadily over the next decade, driven by the rise in renewable energy systems, electric vehicles (EVs), and smart grid technologies. These sectors rely heavily on components like thermal overload relays and resistors, where materials like CuNi14 NC020 shine.

One major trend is the push for energy efficiency. As industries move toward greener technologies, materials that can handle high performance with minimal energy loss are in high demand. CuNi14 NC020’s low resistivity and thermal stability make it a perfect fit for energy-efficient applications, such as heating cables in eco-friendly buildings or resistors in EV charging systems. Another trend is the increasing need for corrosion-resistant materials in marine and offshore applications, where our wire’s ability to withstand harsh environments gives it a clear edge.

The rise of automation and IoT (Internet of Things) is also shaping the market. Smart devices and automated systems require precise, reliable components to function seamlessly, and our CuNi14 NC020 wire is a key player in these applications. From controllers to shunts, this alloy supports the backbone of modern electrical systems. As industries continue to innovate, the versatility and reliability of copper-nickel alloys like ours will keep them at the forefront of material choices.

Applications of CuNi14 NC020 Wire

Our CuNi14 NC020 wire is a jack-of-all-trades, finding its place in a wide range of applications. Here’s where it really shines:

• Thermal Overload Relays: Its stable resistance and heat tolerance make it a top choice for relays that protect electrical systems from overheating. It ensures precise current control, preventing costly equipment failures.

• Low-Voltage Circuit Breakers: The wire’s low resistivity and durability are perfect for breakers that need to handle consistent electrical loads without degrading.

• Resistors and Shunts: CuNi14 NC020 is ideal for precision resistors and shunts, offering reliable performance in everything from industrial controllers to consumer electronics.

• Heating Cables: Used in low-temperature heating applications like electric blankets or underfloor heating, this wire delivers consistent heat output with excellent energy efficiency.

• Marine and Automotive Systems: Its corrosion resistance makes it a favorite for electrical systems in boats, offshore platforms, and vehicles exposed to harsh conditions.

• Aerospace Components: The wire’s ability to maintain performance under varying temperatures and stresses makes it suitable for aerospace electronics, where reliability is critical.

Comparison Parameters Table

Alloy	Resistivity (μΩ·m, 20°C)	Max Working Temp (°C)	Tensile Strength (MPa)	Melting Point (°C)	Density (g/cm³)	TCR (x10⁻⁶/°C, 20-600°C)	EMF vs Cu (μV/°C, 0-100°C)
CuNi1	0.03	200	210	1085	8.9	<100	-8
CuNi6	0.10	220	250	1095	8.9	<60	-18
CuNi10	0.15	250	290	1100	8.9	<50	-25
CuNi14 (NC020)	0.20	300	310	1115	8.9	<30	-28
CuNi19	0.25	300	340	1135	8.9	<25	-32
CuNi23	0.30	300	350	1150	8.9	<16	-34
CuNi30	0.35	350	400	1170	8.9	<10	-37
CuNi44	0.50	400	420	1200	8.9	<-6	-43

When it comes to CuNi14 NC020 wire, we’re not just another supplier—we’re a cut above. Our company has been in the alloy game for over two decades, and we’ve honed our craft to deliver products that meet the highest standards. Here’s why we stand out:

• Unmatched Quality Control: Every batch of our CuNi14 NC020 wire goes through rigorous testing to ensure consistent resistivity, tensile strength, and corrosion resistance. We’re ISO 9001 certified, so you know quality is baked into everything we do.

• Customization Options: Need a specific wire diameter or strip size? We offer tailored solutions to match your exact requirements, whether it’s for a niche application or large-scale production.

• Fast Turnaround: With a production capacity of 150 tons per month and a streamlined supply chain, we deliver your orders quickly—often within a week of payment.

• Expert R&D Team: Our in-house research and development team is always pushing the boundaries, ensuring our alloys stay ahead of industry trends and meet evolving customer needs.

• Sustainability Focus: We’re committed to eco-friendly practices, from energy-efficient production to recyclable packaging, helping you meet your sustainability goals.

• Global Reach, Local Service: While we serve customers worldwide, our dedicated support team ensures you get personalized service, no matter where you are.

Compared to others in the market, our focus on precision and customer-centric solutions sets us apart. Some suppliers cut corners on quality or offer limited customization, but we go the extra mile to ensure our CuNi14 NC020 wire meets your exact specifications. Our advanced manufacturing processes, like hydrogen annealing and cold drawing, result in a product that’s not only high-performing but also easy to work with, saving you time and money during production.

For more details, pls directly contact us.

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：

1. What is CuNi14 NC020 wire used for?
   It’s mainly used in thermal overload relays, low-voltage circuit breakers, resistors, and electrical heating cables due to its low electrical resistance and excellent thermal stability.

2. What are the key properties of CuNi14 NC020 wire?
   It offers low resistivity (0.20 μΩ·m at 20°C), good corrosion resistance, high tensile strength (310 MPa), and a maximum working temperature of 300°C.

3. Why is CuNi14 NC020 suitable for thermal overload relays?
   Its stable resistance and ability to handle heat make it ideal for precise current control in thermal overload relays, ensuring reliable performance.

4. Can CuNi14 NC020 wire be used in marine applications?
   Yes, its corrosion resistance makes it perfect for marine environments, especially in electrical systems exposed to harsh conditions.

5. What sizes is CuNi14 NC020 wire available in?
   It comes in wire diameters from 0.05mm to 10mm, ribbons from 0.050.2mm to 2.06.0mm, and strips from 0.055.0mm to 5.0250mm.

6. How does CuNi14 NC020 wire compare to other copper-nickel alloys?
   It has a balanced nickel content (14%), offering a medium-low resistivity compared to alloys like CuNi44, which has higher resistance but lower temperature tolerance.

7. Is CuNi14 NC020 wire easy to process?
   Absolutely, it’s easy to weld, process, and fabricate, making it versatile for various manufacturing needs.

8. What industries benefit most from CuNi14 NC020 wire?
   It’s widely used in electrical, automotive, marine, and aerospace industries for applications like heating cables, resistors, and circuit breakers.