Precision CuNi23 Wire for Low-Voltage Circuit Breakers and Sensors

Our Precision CuNi23 Wire is a top-tier material designed for low-voltage circuit breakers, sensors, and other high-precision applications. With a nickel content of about 23%, this copper-nickel alloy offers a sweet spot of electrical resistivity (0.30 μΩ·m at 20°C) and thermal stability, making it a go-to choice for industries where reliability and accuracy are non-negotiable. Whether you’re crafting circuit breakers for industrial systems, sensors for automotive applications, or resistors for marine environments, our CuNi23 wire delivers consistent performance every time.

This wire is built for durability and versatility. Its corrosion resistance makes it ideal for harsh conditions, while its high ductility and weldability mean it’s easy to shape into wires, ribbons, or strips. With a tensile strength of 350 MPa and a maximum operating temperature of 300°C, it’s tough enough to handle stress and heat without breaking a sweat. From intricate electronics to rugged industrial setups, our CuNi23 wire is the reliable choice for manufacturers who need quality they can count on.

For more details, pls directly contact us.

What makes our CuNi23 wire special? It’s the perfect blend of precision and toughness. Its low temperature coefficient of resistance (TCR) of less than 16 x10⁻⁶/°C ensures stable electrical properties, even when temperatures fluctuate. This is a game-changer for low-voltage circuit breakers and sensors, where consistency is critical to preventing system failures. Plus, its corrosion resistance makes it a champ in environments like marine or industrial settings, where moisture, chemicals, or saltwater could degrade lesser materials.

We offer this wire in a wide range of sizes to fit any project—wires from 0.05mm to 8mm in diameter, ribbons as thin as 0.05mm, and strips up to 200mm wide. Our hydrogen annealing process gives it a smooth, bright surface and a soft annealed condition, making it a breeze to work with during fabrication. Whether you’re building delicate sensors or robust circuit breakers, our CuNi23 wire is designed to make your manufacturing process smoother and more efficient.

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

For more details, pls directly contact us.

The copper-nickel alloy market is on fire, driven by growing demand in industries like electronics, automotive, marine, aerospace, and industrial manufacturing. The global market for these alloys is expected to see steady growth over the next decade, fueled by trends like the rise of electric vehicles (EVs), renewable energy systems, and advanced automation technologies. These sectors need materials that deliver precision, durability, and energy efficiency—exactly what our CuNi23 wire brings to the table.

Energy efficiency is a major driver in today’s market. As industries push for greener solutions, materials that minimize energy loss while maintaining performance are in high demand. Our CuNi23 wire’s stable resistivity and thermal performance make it a perfect fit for applications like circuit breakers in EV systems or sensors in eco-friendly setups. Another key trend is the growing need for corrosion-resistant materials in marine and industrial applications, where our wire’s ability to withstand harsh conditions gives it a clear edge.

The rise of automation and IoT is also reshaping the landscape. Smart sensors and control systems require materials that deliver pinpoint accuracy and reliability, and our CuNi23 wire is built for just that. From industrial automation to aerospace electronics, this alloy supports the backbone of modern technology. As industries continue to innovate, the versatility and durability of copper-nickel alloys like ours will keep them at the forefront of material choices.

Applications of CuNi23 Wire

Our Precision CuNi23 Wire is a versatile material with a wide range of applications. Here’s where it really shines:

• Low-Voltage Circuit Breakers: Its stable resistivity and durability make it ideal for circuit breakers that protect electrical systems in industrial and automotive applications.

• Sensors: The wire’s low TCR ensures accurate performance in sensors for automotive, marine, and industrial systems, from temperature to pressure monitoring.

• Precision Resistors: Used in electronics, from consumer devices to industrial control systems, CuNi23 wire delivers consistent current control.

• Heating Cables: Ideal for low-temperature heating applications like underfloor heating or industrial heating systems, it offers efficient heat output.

• Marine Applications: Its corrosion resistance makes it perfect for electrical components in boats, offshore platforms, and other marine environments.

• Aerospace Components: The wire’s ability to handle temperature fluctuations and mechanical stress makes it suitable for high-reliability aerospace electronics.

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	0.20	300	310	1115	8.9	<30	-28
CuNi19	0.25	300	340	1135	8.9	<25	-32
CuNi23 (NC030)	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 Precision CuNi23 Wire, we’re not just another supplier—we’re the best in the game. With over two decades of experience in alloy manufacturing, we’ve perfected the art of delivering products that meet the highest standards. Here’s why we stand out:

• Uncompromising Quality Control: Every batch of our CuNi23 wire is rigorously tested for resistivity, tensile strength, and corrosion resistance. Our ISO 9001 certification guarantees quality you can trust.

• Customizable Solutions: Need a specific wire size or form? We offer tailored options, from fine wires to wide strips, to match your exact requirements, whether it’s for a prototype or large-scale production.

• Fast Delivery: With a production capacity of 200 tons per month and an efficient supply chain, we can deliver orders in as little as five days after payment.

• Innovative R&D: Our in-house research team stays ahead of industry trends, ensuring our CuNi23 wire meets the demands of cutting-edge applications.

• Sustainable Practices: We’re committed to eco-friendly manufacturing, using energy-efficient processes and recyclable packaging to support your green initiatives.

• Global Reach, Local Support: We serve customers worldwide but provide personalized service to ensure you get exactly what you need, no matter where you are.

Compared to others in the market, our focus on precision, customization, and reliability sets us apart. Some suppliers cut corners on quality or offer limited flexibility, but we go all-in to deliver a product that’s durable, easy to work with, and perfectly suited to your needs. Our advanced manufacturing techniques, like hydrogen annealing and precision cold drawing, ensure our CuNi23 wire performs flawlessly while saving you time and costs during production.

Looking Ahead

The future is bright for Precision CuNi23 Wire, and we’re excited to lead the way. As industries like electric vehicles, renewable energy, and smart automation continue to grow, the demand for high-performance, reliable materials will keep rising. Our CuNi23 wire is perfectly positioned to meet these challenges, offering the ideal mix of precision, durability, and versatility.

Whether you’re designing circuit breakers for industrial systems or sensors for next-gen vehicles, our CuNi23 wire is the material you can count on. With our commitment to quality, innovation, and customer success, we’re here to help you bring your ideas to life. Ready to power up your next project? Let’s make it happen with our CuNi23 wire.

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.

Client Visits

Building Stronger Partnerships

We support all kinds of testing:

FAQs：

1. What is Precision CuNi23 Wire used for?
   It’s primarily used in low-voltage circuit breakers, sensors, precision resistors, and heating cables for automotive, marine, and industrial applications.

2. Why is CuNi23 wire ideal for low-voltage circuit breakers?
   Its resistivity of 0.30 μΩ·m at 20°C and low temperature coefficient of resistance ensure stable performance and precise current control.

3. What are the key properties of CuNi23 wire?
   It offers a tensile strength of 350 MPa, corrosion resistance, a maximum working temperature of 300°C, and excellent weldability.

4. Can CuNi23 wire withstand harsh environments?
   Yes, its corrosion resistance makes it perfect for marine and industrial settings exposed to moisture, chemicals, or saltwater.

5. What sizes is CuNi23 wire available in?
   It comes in wire diameters from 0.05mm to 8mm, ribbons from 0.050.2mm to 2.06.0mm, and strips from 0.055.0mm to 5.0200mm.

6. How does CuNi23 wire compare to other copper-nickel alloys?
   With 23% nickel, it has higher resistivity than CuNi19 but lower than CuNi44, offering a balanced choice for precision applications.

7. Is CuNi23 wire easy to process?
   Absolutely, its high ductility and weldability make it easy to fabricate into various forms for manufacturing.

8. Which industries benefit most from CuNi23 wire?
   It’s widely used in electronics, automotive, marine, aerospace, and industrial sectors for circuit breakers, sensors, and resistors.