High-Strength CuNi6 CuNi14 Copper Nickel Strip for Circuit Breakers

Our High-Strength CuNi6 and CuNi14 Copper Nickel Strips are top-tier materials built for circuit breakers and other high-performance electrical applications. With nickel contents of 6% and 14%, these alloys deliver resistivities of 0.10 and 0.20 μΩ·m at 20°C, respectively, offering a perfect balance of strength and electrical stability. Whether you’re designing circuit breakers for industrial systems, resistors for automotive electronics, or thermocouples for marine environments, our CuNi6 and CuNi14 strips are engineered to deliver rock-solid performance every time.

These strips are all about toughness and versatility. Their corrosion resistance makes them ideal for harsh environments, while their high ductility and weldability mean they’re easy to shape into custom forms. With tensile strengths ranging from 250 to 310 MPa and maximum working temperatures up to 300°C, they’re built to handle stress and heat without breaking a sweat. From industrial automation to aerospace electronics, our CuNi6 and CuNi14 strips are the go-to choice for manufacturers who need quality they can trust.

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What makes our CuNi6 and CuNi14 strips special? They’re designed for strength and precision. CuNi6, with its lower resistivity, is perfect for applications needing high conductivity, like heating cables or low-voltage circuit breakers. CuNi14 steps it up with higher resistivity and thermal stability, making it a great fit for more demanding circuit breakers and thermocouples. Their low temperature coefficients of resistance (TCRs of <60 and <30 x10⁻⁶/°C) ensure stable performance, even when temperatures fluctuate, which is critical for circuit breakers that need to prevent system failures.

These strips are corrosion-resistant, thriving in environments like industrial plants or marine settings where moisture or chemicals could degrade lesser materials. We produce them in thicknesses from 0.05mm to 5.0mm and widths up to 200mm, with custom options available to suit any project. Our hydrogen annealing process delivers a smooth, bright surface and a soft annealed condition, making them a breeze to work with during fabrication. Whether you’re crafting robust circuit breakers or precision resistors, our CuNi6 and CuNi14 strips are 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 booming, driven by growing demand in industries like electronics, automotive, aerospace, industrial manufacturing, and marine. The global market for these alloys is set to keep climbing over the next decade, fueled by trends like the rise of electric vehicles (EVs), renewable energy systems, and advanced automation. These sectors need materials that deliver strength, precision, and efficiency—exactly what our CuNi6 and CuNi14 strips bring to the table.

Energy efficiency is a major force shaping the market. As industries push for greener solutions, materials that minimize energy loss while maintaining performance are in high demand. Our CuNi6 and CuNi14 strips, with their stable resistivities and thermal performance, are perfect for applications like circuit breakers in EV systems or heating cables in eco-friendly setups. Another key trend is the need for corrosion-resistant materials in marine and industrial applications, where our strips’ ability to withstand tough conditions gives them a clear edge.

The rise of automation and IoT is also driving demand. Circuit breakers and smart control systems require materials that deliver pinpoint accuracy and reliability, and our CuNi6 and CuNi14 strips are built for just that. From industrial automation to aerospace electronics, these alloys support 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 CuNi6 and CuNi14 Strips

Our High-Strength CuNi6 and CuNi14 Copper Nickel Strips are versatile materials with a wide range of applications. Here’s where they really shine:

• Circuit Breakers: Their high tensile strength and stable resistivities make them ideal for low-voltage circuit breakers in industrial and automotive systems, ensuring reliable protection.

• Precision Resistors: These strips deliver consistent current control, perfect for resistors in electronics, from consumer devices to industrial control systems.

• Thermocouples: Used in temperature-sensing applications, they provide accurate readings in industrial furnaces and automotive systems.

• Heating Cables: Perfect for low-temperature heating applications like underfloor heating or industrial heating systems, they offer efficient heat output.

• Marine Applications: Their corrosion resistance ensures reliable performance in electrical components for boats and offshore platforms.

• Aerospace Electronics: Their ability to handle temperature fluctuations and mechanical stress makes them 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
CuNi2	0.05	200	220	1090	8.9	<80	-12
CuNi6 (NC010)	0.10	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 (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 High-Strength CuNi6 and CuNi14 Copper Nickel Strips, we’re not just another supplier—we’re leading the pack. With over 20 years of experience in alloy manufacturing, we’ve mastered the art of delivering products that exceed expectations. Here’s why we’re the best choice:

• Rock-Solid Quality Control: Every batch of our CuNi6 and CuNi14 strips is rigorously 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 strip size or form? We offer customized options, from ultra-thin 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 strips meet 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 strength, customization, and reliability sets us apart. Some suppliers cut corners on quality or offer limited flexibility, but we go all-in to deliver products that are durable, easy to work with, and perfectly suited to your needs. Our advanced manufacturing techniques, like hydrogen annealing and precision cold rolling, ensure our CuNi6 and CuNi14 strips perform 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 are CuNi6 and CuNi14 Copper Nickel Strips used for?
   They’re mainly used in circuit breakers, precision resistors, thermocouples, and heating cables for industrial, automotive, and marine applications.

2. Why are CuNi6 and CuNi14 strips ideal for circuit breakers?
   Their stable resistivities (0.10–0.20 μΩ·m at 20°C) and high tensile strength ensure reliable performance in high-stress electrical systems.

3. What are the key properties of CuNi6 and CuNi14 strips?
   They offer tensile strengths of 250–310 MPa, good corrosion resistance, maximum working temperatures up to 300°C, and excellent weldability.

4. Can CuNi6 and CuNi14 strips withstand harsh environments?
   Yes, their corrosion resistance makes them perfect for industrial and marine settings exposed to moisture or chemicals.

5. What sizes are CuNi6 and CuNi14 strips available in?
   They come in strip thicknesses from 0.05mm to 5.0mm and widths up to 200mm, with custom sizes available for specific needs.

6. How do CuNi6 and CuNi14 compare to other copper-nickel alloys?
   CuNi6 (6% nickel) has lower resistivity than CuNi14 (14% nickel), offering versatile options for circuit breakers and precision applications.

7. Are CuNi6 and CuNi14 strips easy to process?
   Absolutely, their high ductility and weldability make them easy to fabricate into various forms for manufacturing.

8. Which industries benefit most from CuNi6 and CuNi14 strips?
   They’re widely used in electronics, automotive, aerospace, industrial, and marine sectors for circuit breakers, resistors, and thermocouples.