Custom CuNi30 Alloy Wire for High-Temperature Thermocouples

Our Custom CuNi30 Alloy Wire is a top-tier material designed for high-temperature thermocouples and other demanding applications. With a nickel content of around 30%, this copper-nickel alloy delivers a killer combo of high resistivity (0.35 μΩ·m at 20°C) and thermal stability, making it a go-to for industries that need precision in extreme conditions. Whether you’re building thermocouples for industrial furnaces, resistors for aerospace electronics, or heating cables for chemical plants, our CuNi30 wire is built to perform without missing a beat.

This wire is all about toughness and flexibility. Its excellent corrosion resistance makes it a champ in harsh environments, while its high ductility and weldability mean it’s easy to shape into wires, ribbons, or strips. With a tensile strength of 400 MPa and a maximum operating temperature of 350°C, it’s ready to handle serious heat and stress. From aerospace to industrial manufacturing, our CuNi30 wire is the reliable choice for manufacturers who need quality they can count on.

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What makes our CuNi30 wire stand out? It’s the perfect blend of precision and durability. Its super-low temperature coefficient of resistance (TCR) of less than 10 x10⁻⁶/°C ensures rock-steady electrical performance, even when temperatures climb. This is a game-changer for high-temperature thermocouples, where accuracy is everything. Plus, its top-notch corrosion resistance makes it ideal for environments like chemical plants or marine settings, where acids, alkalis, or saltwater 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 a breeze to work with during fabrication. Whether you’re crafting delicate thermocouple components or robust heating systems, our CuNi30 wire is designed to make your job easier 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 on a roll, and it’s no surprise why. Industries like aerospace, industrial manufacturing, electronics, automotive, and marine 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 industrial automation. These sectors demand materials that deliver precision, durability, and thermal stability—exactly what our CuNi30 wire brings to the table.

Sustainability is a big deal in today’s market. As industries push for greener solutions, materials that offer energy efficiency and long-term durability are in high demand. Our CuNi30 wire’s stable resistivity and corrosion resistance make it a perfect fit for applications like thermocouples in energy-efficient systems or heating cables in eco-friendly setups. Another key trend is the need for materials that can handle extreme conditions, like those in chemical processing or marine environments, where our wire’s toughness gives it a clear edge.

The rise of automation and IoT is also shaking things up. High-temperature thermocouples and smart control systems need materials that deliver pinpoint accuracy and reliability, and our CuNi30 wire is built for just that. From industrial furnaces to aerospace electronics, 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 CuNi30 Wire

Our Custom CuNi30 Alloy Wire is a versatile powerhouse with a wide range of applications. Here’s where it really shines:

• High-Temperature Thermocouples: Its thermal stability and low TCR make it ideal for thermocouples in industrial furnaces, aerospace systems, and chemical plants, ensuring accurate temperature readings.

• Precision Resistors: The wire’s stable resistivity delivers consistent current control, perfect 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, CuNi30 provides efficient and reliable heat output.

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

• Automotive Systems: From sensors to control units, CuNi30 wire supports reliable performance in vehicles, especially in EVs and hybrids.

• Aerospace Electronics: Its ability to handle high temperatures 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 (NC035)	0.35	350	400	1170	8.9	<10	-37
CuNi44	0.50	400	420	1200	8.9	<-6	-43

When it comes to Custom CuNi30 Alloy Wire, we’re not just another player—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 CuNi30 wire gets put through the wringer, tested 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 CuNi30 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 options, but we go all out 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 CuNi30 wire performs flawlessly while 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 Custom CuNi30 Alloy Wire used for?
   It’s mainly used in high-temperature thermocouples, precision resistors, heating cables, and electrical components for industrial, aerospace, and marine applications.

2. Why is CuNi30 wire ideal for high-temperature thermocouples?
   Its stable resistivity of 0.35 μΩ·m at 20°C and high thermal tolerance up to 350°C ensure accurate temperature measurements in extreme conditions.

3. What are the key properties of CuNi30 wire?
   It boasts a tensile strength of 400 MPa, excellent corrosion resistance, great weldability, and a low temperature coefficient of resistance.

4. Can CuNi30 wire handle extreme environments?
   Yes, its corrosion resistance makes it perfect for harsh settings like industrial furnaces, chemical plants, or marine environments.

5. What sizes is CuNi30 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 CuNi30 wire compare to other copper-nickel alloys?
   With 30% nickel, it offers higher resistivity than CuNi23 but lower than CuNi44, making it ideal for high-temperature and precision applications.

7. Is CuNi30 wire easy to work with?
   Absolutely, its high ductility and weldability make it a breeze to process into various forms for manufacturing.

8. Which industries benefit most from CuNi30 wire?
   It’s widely used in aerospace, industrial, electronics, automotive, and marine sectors for thermocouples, resistors, and heating systems.