High-Quality CuNi2 CuNi6 Copper-Nickel Wire for Electrical Resistors and Sensors

Our High-Quality CuNi2 CuNi6 Copper-Nickel Wire is a versatile, reliable material designed for electrical resistors, sensors, and thermocouples. With nickel contents of 2% (CuNi2) and 6% (CuNi6), these alloys strike an ideal balance between low to medium resistivity, thermal stability, and affordability. They’re perfect for industries like electronics, automotive, and renewable energy, where precision and reliability are non-negotiable. Available in diameters from 0.01mm to 3mm, our wires are crafted to meet the tightest tolerances, ensuring top performance for your projects.

CuNi2’s low resistivity (8 µΩ·cm at 20°C) makes it a cost-effective choice for applications like sensors and low-temperature resistors, while CuNi6’s slightly higher resistivity (15 µΩ·cm) suits thermocouples and heating elements. Both offer good corrosion resistance in mild environments and can handle temperatures up to 250°C (CuNi2) and 300°C (CuNi6). We’ve optimized our manufacturing process to deliver wires that are consistent, durable, and ready for demanding applications.

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CuNi2 and CuNi6 are standout alloys for their tailored performance. CuNi2, with 2% nickel, offers lower resistivity than CuNi6, making it ideal for cost-sensitive applications like sensors and resistors in consumer electronics. CuNi6, with 6% nickel, provides higher resistivity and better thermal stability, perfect for thermocouples and heating elements in industrial settings. Compared to high-nickel alloys like Constantan 6J40, both are more affordable, delivering excellent performance without breaking the bank.

Their thermal conductivity—65 W/mK for CuNi2 and 50 W/mK for CuNi6—ensures efficient heat transfer, critical for sensors and thermocouples. With tensile strengths of 220 MPa (CuNi2) and 250 MPa (CuNi6), they’re tough enough to handle mechanical stress. Their low temperature coefficient of resistance (TCR) keeps electrical properties stable in low to medium-temperature environments, from -50°C to 250°C (CuNi2) or 300°C (CuNi6). Both offer good corrosion resistance for mild settings, like indoor electronics or HVAC systems, making them versatile for a range of applications.

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 thriving, driven by growing demand for precision materials in electronics, automotive, and renewable energy sectors. Sensors and resistors are seeing increased adoption as industries embrace automation, IoT, and energy-efficient systems. The global sensor market is projected to grow at a CAGR of around 6.5% through 2030, fueled by advancements in smart manufacturing, electric vehicles (EVs), and smart home technologies.

CuNi2 and CuNi6 wires are well-positioned in this landscape. CuNi2’s low resistivity makes it a go-to for cost-effective sensors and resistors in consumer electronics and HVAC systems, while CuNi6’s higher resistivity suits thermocouples and heating elements in industrial and automotive applications. The rise of EVs and renewable energy systems, like solar and wind, is boosting demand for reliable, affordable alloys for sensors and low-voltage components. Meanwhile, the push for energy-efficient HVAC systems is driving the need for precise thermocouples, where both alloys shine.

Sustainability is a major trend shaping the industry. Companies are seeking eco-friendly materials to meet environmental regulations, and our CuNi2 and CuNi6 wires deliver. Produced with energy-efficient processes, they’re fully recyclable, helping you achieve green goals without compromising quality. The trend toward miniaturization in electronics is another driver, with industries demanding thinner wires for compact designs. Our ability to produce wires as fine as 0.01mm keeps us ahead of the curve.

Emerging technologies, like IoT-enabled sensors and smart grids, are increasing the need for cost-effective, reliable alloys. These systems rely on materials that balance performance and affordability, and CuNi2 and CuNi6 fit the bill. As industries continue to innovate, the demand for precision alloys like these will keep growing.

Applications of CuNi2 and CuNi6 Copper-Nickel Wire

Our CuNi2 and CuNi6 wires are versatile materials with a wide range of applications. Here’s where they make an impact:

• Electrical Resistors: CuNi2’s low resistivity is perfect for resistors in consumer electronics, automotive systems, and telecommunications, while CuNi6 suits higher-resistance applications.

• Sensors: Both alloys are used in temperature and pressure sensors for HVAC, industrial automation, and smart home devices, ensuring accurate performance.

• Thermocouples: CuNi6 is ideal for Type T and J thermocouples in HVAC and industrial processes, while CuNi2 supports low-temperature thermocouple applications.

• Low-Temperature Heating Elements: CuNi6 is used in heating cables for underfloor heating and automotive systems, while CuNi2 suits lighter heating needs.

• Automotive Components: From EV battery sensors to climate control systems, both wires provide reliable performance in mild environments.

• Renewable Energy: In solar and wind energy systems, they’re used in sensors and low-voltage components that require cost-effective materials.

Their flexibility also makes them suitable for custom applications, like low-voltage circuit breakers and conductive elements, where affordability and reliability are key.

Comparison Table: CuNi2 vs. CuNi6 vs. CuNi1 vs. Constantan 6J40

Property	CuNi2	CuNi6	CuNi1	Constantan 6J40
Nickel Content (%)	2	6	1	40
Resistivity at 20°C (µΩ·cm)	8	15	5	49
Max Operating Temp (°C)	250	300	200	600
Thermal Conductivity (W/mK)	65	50	70	23
Tensile Strength (MPa)	220	250	200	420
Corrosion Resistance	Good	Good	Good	Excellent
Applications	Resistors, sensors, thermocouples	Thermocouples, resistors, heating	Resistors, sensors	Precision resistors, thermocouples
Cost Efficiency	Very High	High	Very High	Moderate

We’re not just a supplier—we’re a leader in delivering high-quality CuNi2 and CuNi6 Copper-Nickel Wire. Here’s why we stand out:

• Precision Manufacturing: Our advanced processes produce wires 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 gives us a clear edge. We deliver products tailored to your needs and built to perform reliably in resistors and sensors.

Looking Forward

The future of CuNi2 and CuNi6 Copper-Nickel Wire is bright. As industries like electronics, automotive, and renewable energy continue to grow, the demand for cost-effective, high-performance alloys will soar. We’re committed to staying ahead, investing in R&D to enhance our wires’ properties and meet emerging demands. From developing finer wires for compact sensors to improving thermal stability for next-generation applications, we’re always innovating.

Our CuNi2 and CuNi6 wires are key components in the systems driving modern industries. From sensors in smart home devices to thermocouples in EVs, they’re small but essential parts of the bigger picture. We’re excited to support our customers in building efficient, reliable solutions for the future.

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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-Quality CuNi2 CuNi6 Copper-Nickel Wire used for?
   It’s used for electrical resistors, sensors, and thermocouples in industries like electronics, automotive, and renewable energy.

2. Why are CuNi2 and CuNi6 suitable for resistors and sensors?
   Their low to medium resistivity and stable electrical properties ensure accurate performance in precision applications.

3. Which industries rely on CuNi2 and CuNi6 Wire?
   Electronics, automotive, HVAC, industrial automation, and renewable energy use them for resistors, sensors, and heating elements.

4. How do CuNi2 and CuNi6 compare to other copper-nickel alloys?
   CuNi2 (2% nickel) offers lower resistivity than CuNi6 (6% nickel), while both are more cost-effective than high-nickel alloys like Constantan.

5. What are the temperature limits for CuNi2 and CuNi6 Wire?
   CuNi2 operates from -50°C to 250°C; CuNi6 up to 300°C, ideal for low to medium-temperature applications.

6. Are CuNi2 and CuNi6 resistant to corrosion?
   Yes, both provide good corrosion resistance in mild environments like indoor electronics or HVAC systems.

7. Can CuNi2 and CuNi6 Wire be customized for specific projects?
   We offer customizable wire diameters, from 0.01mm to 3mm, tailored to your project’s requirements.

8. What’s the lifespan of CuNi2 and CuNi6 in sensor applications?
   With proper use, they deliver consistent performance for years in low to medium-corrosion environments.