Precision CuNi34 Wire for Corrosion-Resistant Sensors and Relays

Our Precision CuNi34 Wire is a rock-solid material engineered for corrosion-resistant sensors and relays in tough environments. With a nickel content of around 34%, this copper-nickel alloy delivers a killer combo of high resistivity (0.40 μΩ·m at 20°C) and unbeatable corrosion resistance, making it a top choice for industries that demand reliability in harsh conditions. Whether you’re building sensors for marine systems, relays for industrial setups, or resistors for aerospace applications, our CuNi34 wire is designed to keep things running smoothly.

This wire is all about durability and versatility. Its superior corrosion resistance makes it a champ in salty or chemical-heavy environments, while its high ductility and weldability mean it’s a breeze to shape into wires, ribbons, or strips. With a tensile strength of 410 MPa and a maximum operating temperature of 350°C, it’s built to handle serious stress and heat. From marine navigation to industrial automation, our CuNi34 wire is the go-to material for manufacturers who need quality they can trust.

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What makes our CuNi34 wire stand out? It’s the perfect blend of precision and toughness. Its ultra-low temperature coefficient of resistance (TCR) of less than 8 x10⁻⁶/°C ensures rock-steady electrical performance, even when temperatures swing. This is a big deal for sensors and relays, where consistency is critical to avoiding system failures. Plus, its exceptional corrosion resistance makes it ideal for environments like marine or chemical plants, where saltwater, acids, or alkalis could eat away at lesser materials.

We offer this wire in a 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 super easy to work with during fabrication. Whether you’re crafting delicate sensors or robust relays, our CuNi34 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

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The copper-nickel alloy market is buzzing, and it’s no surprise why. Industries like marine, electronics, automotive, aerospace, and industrial automation are leaning hard on high-performance materials to power their innovations. The global market for these alloys is set to keep growing over the next decade, driven by trends like the rise of renewable energy, electric vehicles (EVs), and advanced sensor technologies. These sectors need materials that deliver precision, durability, and resistance to harsh environments—exactly what our CuNi34 wire brings to the table.

Sustainability is a major force shaping the market. As industries push for greener solutions, materials that offer energy efficiency and long-term durability are in high demand. Our CuNi34 wire’s stable resistivity and corrosion resistance make it a perfect fit for applications like sensors in eco-friendly systems or relays in energy-efficient setups. Another key trend is the growing need for corrosion-resistant materials in marine and industrial applications, where our wire’s ability to withstand tough conditions gives it a clear edge.

The rise of automation and IoT is also driving demand. Smart sensors and relays in industrial and marine systems require materials that deliver pinpoint accuracy and reliability, and our CuNi34 wire is built for just that. From navigation systems to automated control units, this alloy supports the backbone of modern technology. As industries keep pushing the boundaries, the versatility and durability of copper-nickel alloys like ours will keep them at the top of the material game.

Applications of CuNi34 Wire

Our Precision CuNi34 Wire is a versatile powerhouse with a wide range of applications. Here’s where it really makes waves:

• Corrosion-Resistant Sensors: Its corrosion resistance and stable resistivity make it ideal for sensors in marine, chemical, and industrial environments, ensuring accurate performance.

• Relays: The wire’s durability and thermal stability are perfect for relays in industrial and automotive systems, protecting circuits from overloads.

• Precision Resistors: Its low TCR ensures consistent current control, making it great for resistors in electronics, from consumer devices to industrial systems.

• Heating Cables: Used in high-temperature heating applications like industrial heating systems or underfloor heating, CuNi34 delivers efficient heat output.

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

• Aerospace Electronics: Its ability to handle temperature fluctuations and mechanical stress makes it suitable for high-reliability aerospace components.

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	0.30	300	350	1150	8.9	<16	-34
CuNi30	0.35	350	400	1170	8.9	<10	-37
CuNi34 (NC040)	0.40	350	410	1180	8.9	<8	-39
CuNi44	0.50	400	420	1200	8.9	<-6	-43

When it comes to Precision CuNi34 Wire, we’re not just another supplier—we’re leading the pack. With over 20 years of experience in alloy manufacturing, we’ve nailed the art of delivering products that exceed expectations. Here’s why we’re the best choice:

• Rock-Solid Quality Control: Every batch of our CuNi34 wire is put through rigorous testing for resistivity, tensile strength, and corrosion resistance. Our ISO 9001 certification means you’re getting quality you can bank on.

• Tailored Solutions: Need a specific wire size or form? We offer customized options, from fine wires to wide strips, to match your exact needs, whether it’s a one-off prototype or large-scale production.

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

• Cutting-Edge R&D: Our in-house research team stays ahead of the curve, ensuring our CuNi34 wire meets the demands of tomorrow’s applications.

• Green Manufacturing: We’re all about sustainability, using energy-efficient processes and recyclable packaging to help you hit your eco-friendly goals.

• Global Reach, Local Touch: We serve customers worldwide but keep things personal with dedicated support to ensure you get exactly what you need, wherever 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 tough, easy to work with, and perfectly suited to your needs. Our advanced manufacturing techniques, like hydrogen annealing and precision cold drawing, ensure our CuNi34 wire performs flawlessly while saving you time and money during production.

Looking Ahead

The future is looking bright for Precision CuNi34 Wire, and we’re pumped to be at the forefront. As industries like marine, renewable energy, and industrial automation keep growing, the demand for high-performance, corrosion-resistant materials will only climb. Our CuNi34 wire is perfectly positioned to meet these challenges, offering the ideal mix of durability, precision, and versatility.

Whether you’re designing sensors for marine systems or relays for industrial setups, our CuNi34 wire is the material you can trust. With our commitment to quality, innovation, and customer success, we’re here to help you turn your ideas into reality. Ready to tackle your next project? Let’s make it happen with our CuNi34 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.

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FAQs：

1. What is Precision CuNi34 Wire used for?
   It’s primarily used in corrosion-resistant sensors, relays, precision resistors, and heating cables for marine, industrial, and automotive applications.

2. Why is CuNi34 wire ideal for corrosion-resistant sensors?
   Its high corrosion resistance and stable resistivity of 0.40 μΩ·m at 20°C ensure reliable performance in harsh, corrosive environments.

3. What are the key properties of CuNi34 wire?
   It offers a tensile strength of 410 MPa, excellent corrosion resistance, a maximum working temperature of 350°C, and great weldability.

4. Can CuNi34 wire withstand harsh environments?
   Yes, its superior corrosion resistance makes it perfect for marine, chemical, and industrial settings exposed to saltwater or chemicals.

5. What sizes is CuNi34 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 CuNi34 wire compare to other copper-nickel alloys?
   With 34% nickel, it provides higher resistivity than CuNi30 but lower than CuNi44, offering a robust option for precision applications.

7. Is CuNi34 wire easy to process?
   Definitely, its high ductility and weldability make it easy to fabricate into various forms for manufacturing needs.

8. Which industries benefit most from CuNi34 wire?
   It’s widely used in marine, electronics, automotive, aerospace, and industrial sectors for sensors, relays, and resistors.