Durable CuNi1 Copper-Nickel Wire for Precision Resistors and Sensors

Our Durable CuNi1 Copper-Nickel Wire is a high-quality material designed for precision resistors, sensors, and low-resistance thermocouples. With a nickel content of just 1%, this alloy strikes the perfect balance between low resistivity and reliable performance, making it a cost-effective choice for industries like electronics, automotive, and HVAC. Available in diameters from 0.01mm to 3mm, our CuNi1 wire is crafted with precision to meet the tightest tolerances, ensuring top-notch performance for your projects.

This wire’s low resistivity—around 5 µΩ·cm at 20°C—makes it ideal for applications where efficiency and affordability are key. It offers good corrosion resistance for mild environments and can handle temperatures up to 200°C, making it a solid pick for low-temperature sensors and resistors. We’ve optimized our manufacturing to deliver a product that’s consistent, durable, and ready to perform in demanding applications.

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CuNi1 is a standout for its low resistivity and cost-efficiency. With only 1% nickel, it has the lowest resistivity among copper-nickel alloys, making it a budget-friendly option compared to higher-nickel alloys like CuNi6 or Constantan 6J40. Its high thermal conductivity (70 W/mK) ensures efficient heat transfer, which is critical for sensors and resistors in electronics. With a tensile strength of 200 MPa, it’s tough enough to handle mechanical stress while keeping costs low.

The wire’s low temperature coefficient of resistance (TCR) ensures stable electrical properties in low-temperature environments, from -50°C to 200°C. This makes it perfect for precision resistors in consumer electronics or sensors in HVAC systems. While it’s not built for extreme corrosion like higher-nickel alloys, its good corrosion resistance works well in mild settings, such as indoor electrical systems or automotive components. For projects where low resistance and affordability are priorities, CuNi1 is a top performer.

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 the rise, driven by growing demand for reliable materials in electronics, automotive, and renewable energy sectors. Precision resistors and sensors are seeing increased adoption as industries prioritize real-time monitoring and energy efficiency. The global sensor market is projected to grow at a CAGR of around 6% through 2030, fueled by advancements in IoT, smart manufacturing, and electric vehicles (EVs).

CuNi1 wire fits perfectly into this landscape. Its low resistivity makes it an economical choice for resistors and sensors in applications that don’t require high corrosion resistance or extreme temperatures. The rise of smart home devices and EV systems is boosting demand for cost-effective materials like CuNi1 for sensors and low-voltage components. Meanwhile, the push for energy-efficient HVAC systems is driving the need for reliable resistors and thermocouples, where CuNi1 excels.

Sustainability is a major trend shaping the industry. Companies are seeking eco-friendly materials to meet environmental regulations, and our CuNi1 wire delivers. Produced with energy-efficient processes, it’s also fully recyclable, helping you achieve green goals without compromising performance. The trend toward miniaturization in electronics is another driver, with industries demanding thinner wires for compact designs. Our ability to produce CuNi1 wire as fine as 0.01mm keeps us ahead of the game.

Emerging technologies, like IoT-enabled sensors and smart grids, are increasing the need for affordable, reliable alloys. These systems rely on materials that balance cost and performance, and CuNi1 is a perfect fit. As industries continue to innovate, the demand for low-resistance, high-precision alloys like CuNi1 will keep growing.

Applications of CuNi1 Copper-Nickel Wire

Our CuNi1 Wire is a versatile material with a wide range of applications. Here’s where it shines:

• Precision Resistors: Its low resistivity and stable electrical properties make it ideal for resistors in consumer electronics, automotive systems, and telecommunications.

• Sensors: Used in temperature and pressure sensors for HVAC, smart home devices, and industrial automation, it ensures accurate performance in mild environments.

• Low-Resistance Thermocouples: Its stable thermal properties are perfect for thermocouples in low-temperature applications, like appliances and HVAC systems.

• Automotive Components: From EV battery sensors to control units, CuNi1 provides reliable performance in low-corrosion settings.

• Consumer Electronics: Used in connectors and sensors for wearables, smartphones, and smart home devices, it balances cost and performance.

• Renewable Energy: In solar and wind energy systems, it’s used in low-temperature sensors and electrical components that require affordability.

Its flexibility also makes it suitable for custom applications, like low-voltage circuit breakers and conductive elements, where low resistance and reliability are essential.

Comparison Table: CuNi1 vs. CuNi6 vs. Constantan 6J40 vs. Manganese Bronze 6J12

Property	CuNi1	CuNi6	Constantan 6J40	Manganese Bronze 6J12
Nickel Content (%)	1	6	40	12 (with Mn)
Resistivity at 20°C (µΩ·cm)	5	15	49	30
Max Operating Temp (°C)	200	300	600	400
Thermal Conductivity (W/mK)	70	50	23	35
Tensile Strength (MPa)	200	250	420	350
Corrosion Resistance	Good	Good	Excellent	Excellent
Applications	Resistors, sensors, thermocouples	Thermocouples, heating	Precision resistors, thermocouples	Sensors, heating
Cost Efficiency	Very High	High	Moderate	Moderate

We’re not just a supplier—we’re a leader in delivering high-quality CuNi1 Copper-Nickel Wire. Here’s why we stand out:

• Precision Manufacturing: Our advanced processes produce wire with tight tolerances, from 0.01mm to 3mm in diameter, ensuring consistent performance for your applications.

• Custom Solutions: We offer fully customizable wire sizes and configurations to meet your specific needs, whether for resistors, sensors, or thermocouples.

• Rigorous Quality Control: Every batch undergoes extensive testing in our state-of-the-art labs, meeting ASTM and ISO9001 standards for chemical and physical properties.

• Global Expertise, Local Support: With over 40 years of experience, we export to more than 70 countries and provide dedicated support to ensure your projects succeed.

• Eco-Friendly Production: Our energy-efficient processes and recyclable materials help you meet sustainability goals without sacrificing quality.

• Fast Delivery: Our streamlined production and logistics ensure quick turnaround times, even for custom orders, keeping your projects on schedule.

Compared to others, our focus on precision, customization, and sustainability sets us apart. We deliver a product that’s tailored to your needs and built to perform reliably in low-resistance applications.

Looking Forward

The future of CuNi1 Copper-Nickel Wire is bright. As industries like electronics, automotive, and renewable energy continue to expand, the demand for cost-effective, high-performance alloys will grow. We’re committed to staying ahead, investing in R&D to enhance our wire’s properties and meet emerging demands. From developing finer wires for compact sensors to improving electrical stability for next-generation applications, we’re always innovating.

Our CuNi1 wire is a key component in the systems driving modern industries. From sensors in smart home devices to resistors in EV systems, it’s a small but essential part of the bigger picture. We’re excited to support our customers in building efficient, reliable solutions for the future.

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 Durable CuNi1 Copper-Nickel Wire used for?
   It’s used for precision resistors, sensors, and low-resistance thermocouples in industries like electronics, automotive, and industrial automation.

2. Why is CuNi1 suitable for precision resistors?
   Its low resistivity and stable electrical properties ensure accurate performance in high-precision electrical applications.

3. Which industries rely on CuNi1 Wire?
   Electronics, automotive, renewable energy, HVAC, and consumer goods use it for resistors, sensors, and thermocouples.

4. How does CuNi1 compare to other copper-nickel alloys?
   With 1% nickel, it offers lower resistivity than CuNi6 or Constantan, making it ideal for cost-effective, low-resistance applications.

5. What are the temperature limits for CuNi1 Wire?
   It operates reliably from -50°C to 200°C, perfect for low-temperature sensor and resistor applications.

6. Is CuNi1 resistant to corrosion?
   Yes, it provides good corrosion resistance in mild environments, such as indoor electronics or HVAC systems.

7. Can CuNi1 Wire be customized for specific projects?
   We offer customizable wire diameters, from 0.01mm to 3mm, tailored to meet your unique requirements.

8. What’s the lifespan of CuNi1 in sensor applications?
   With proper use, it delivers consistent performance for years in low-corrosion, low-temperature settings.