High-Purity CuNi19 Copper Nickel Wire for Precision Resistors

Our High-Purity CuNi19 Copper Nickel Wire is a standout choice for precision resistors and other high-performance electrical components. With a nickel content of around 19%, this alloy delivers a sweet spot of electrical resistivity (0.25 μΩ·m at 20°C) and thermal stability, making it perfect for applications where accuracy and reliability are non-negotiable. Whether it’s for resistors in cutting-edge electronics, heating cables in energy-efficient systems, or components in rugged marine environments, our CuNi19 wire gets the job done.

This wire is all about precision and versatility. It’s corrosion-resistant, easy to weld, and highly ductile, so manufacturers can shape it into wires, ribbons, or strips without hassle. With a tensile strength of 340 MPa and a maximum working temperature of 300°C, it’s built to perform under pressure. From automotive control systems to aerospace electronics, our CuNi19 wire is engineered to meet the demands of modern industries with ease.

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What sets our CuNi19 wire apart? It’s the perfect blend of performance and practicality. Its low temperature coefficient of resistance (TCR) of less than 25 x10⁻⁶/°C ensures that its electrical properties stay rock-solid even when temperatures swing. This makes it a top pick for precision resistors, where even the slightest variation can throw things off. Plus, its corrosion resistance is a lifesaver in harsh environments like marine or industrial settings, where exposure to moisture or chemicals is a constant challenge.

We offer this wire in a wide range of sizes to suit any project—wires from 0.05mm to 8mm in diameter, ribbons as thin as 0.05mm, and strips up to 200mm wide. Our manufacturing process includes hydrogen annealing for a smooth, bright surface and soft annealed condition, making the wire easy to work with during fabrication. Whether you’re crafting intricate electronic components or robust heating systems, our CuNi19 wire is designed to make your job easier.

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 on fire, and it’s no surprise why. Industries like electronics, automotive, aerospace, and marine are increasingly relying on high-performance materials to power their innovations. The global market for copper-nickel 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 smart grid technologies. These sectors demand materials that can deliver precision, durability, and energy efficiency—exactly what our CuNi19 wire brings to the table.

Energy efficiency is a big driver in today’s market. As industries shift toward greener solutions, materials that minimize energy loss while maintaining performance are in high demand. CuNi19’s balanced resistivity and thermal stability make it a go-to for applications like precision resistors in EV charging systems or heating cables in eco-friendly buildings. Another key trend is the growing need for corrosion-resistant materials in marine and offshore applications, where our wire’s ability to withstand harsh conditions gives it a clear advantage.

The rise of automation and IoT is also reshaping the landscape. Smart devices and automated systems require components that deliver consistent performance, and our CuNi19 wire is a perfect fit for precision resistors and control systems in these applications. As industries continue to push the boundaries of technology, the versatility and reliability of copper-nickel alloys like ours will keep them at the forefront of material choices.

Applications of CuNi19 Wire

Our High-Purity CuNi19 Copper Nickel Wire is a versatile player in a wide range of applications. Here’s where it really shines:

• Precision Resistors: Its stable resistivity and low TCR make it ideal for resistors in electronics, ensuring accurate current control in everything from consumer devices to industrial systems.

• Thermal Overload Relays: The wire’s heat tolerance and consistent performance protect electrical systems from overheating, making it a key component in relays.

• Low-Temperature Heating Cables: Used in applications like electric blankets or underfloor heating, CuNi19 delivers reliable heat output with excellent energy efficiency.

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

• Automotive Systems: From control units to sensors, this wire supports reliable performance in vehicles, especially in EVs and hybrid systems.

• Aerospace Electronics: Its ability to maintain performance under varying temperatures and stresses makes it a great fit for aerospace components where reliability is critical.

Our Company’s Advantage

When it comes to High-Purity CuNi19 Copper Nickel Wire, we’re not just another supplier—we’re the best in the business. With over 20 years of experience in alloy manufacturing, we’ve perfected the art of delivering top-notch products that meet the highest standards. Here’s why we’re the go-to choice:

• Rigorous Quality Control: Every batch of our CuNi19 wire undergoes strict testing to ensure consistent resistivity, tensile strength, and corrosion resistance. Our ISO 9001 certification means quality is at the core of everything we do.

• Tailored Solutions: Need a specific wire size or form? We offer customized options to match your exact needs, whether it’s for a small-scale prototype or large-scale production.

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

• Innovative R&D: Our dedicated research and development team stays ahead of industry trends, ensuring our products meet the evolving demands of modern applications.

• Eco-Friendly Practices: We’re committed to sustainability, using energy-efficient production methods and recyclable packaging to help you meet your green goals.

• Global Support, Local Touch: We serve customers worldwide but provide personalized support 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 customer satisfaction sets us apart. Some suppliers skimp on quality or offer limited flexibility, but we go all-in to deliver a product that’s reliable, easy to work with, and tailored to your needs. Our advanced manufacturing techniques, like hydrogen annealing and precision cold drawing, ensure our CuNi19 wire performs flawlessly while saving you time and money during production.

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 (NC025)	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

The future is bright for High-Purity CuNi19 Copper Nickel Wire, and we’re thrilled to be leading the way. As industries like electric vehicles, renewable energy, and smart technology continue to grow, the demand for high-performance, reliable materials will keep rising. Our CuNi19 wire is perfectly positioned to meet these challenges, offering the ideal mix of precision, durability, and versatility.

Whether you’re building precision resistors for next-gen electronics or designing heating systems for sustainable buildings, our CuNi19 wire is the material you can count on. With our commitment to quality, innovation, and customer success, we’re here to help you turn your ideas into reality. Ready to take your project to the next level? Let’s make it happen with our CuNi19 wire.

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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 High-Purity CuNi19 Copper Nickel Wire used for?
   It’s primarily used in precision resistors, thermal overload relays, low-temperature heating cables, and electrical components for automotive and marine applications.

2. What makes CuNi19 wire ideal for precision resistors?
   Its stable resistivity of 0.25 μΩ·m at 20°C and low temperature coefficient of resistance ensure consistent performance in high-precision applications.

3. What are the key properties of CuNi19 wire?
   It boasts a tensile strength of 340 MPa, corrosion resistance, a maximum working temperature of 300°C, and excellent weldability.

4. Can CuNi19 wire be used in harsh environments?
   Yes, its high corrosion resistance makes it perfect for marine, industrial, and automotive settings exposed to moisture or chemicals.

5. What sizes is CuNi19 wire available in?
   It’s available 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 CuNi19 wire compare to other copper-nickel alloys?
   With 19% nickel, it offers higher resistivity than CuNi10 but lower than CuNi44, striking a balance for precision and thermal stability.

7. Is CuNi19 wire easy to manufacture with?
   Absolutely, its excellent ductility and weldability make it easy to process into various forms for manufacturing.

8. Which industries rely on CuNi19 wire?
   It’s widely used in electronics, automotive, aerospace, and marine industries for resistors, heating elements, and control systems.