Corrosion-Resistant CuNi6 CuNi8 Copper-Nickel Wire for Industrial Sensors

Our Corrosion-Resistant CuNi6 CuNi8 Copper-Nickel Wire is a top-tier material designed for industrial sensors, thermocouples, and precision resistors. With nickel contents of 6% (CuNi6) and 8% (CuNi8), these alloys offer a perfect mix of corrosion resistance, medium resistivity, and thermal stability. They’re ideal for industries like marine, automotive, and chemical processing, where sensors need to perform reliably in tough conditions. Available in diameters from 0.01mm to 3mm, our wires are crafted with precision to meet the strictest standards, ensuring consistent quality for your projects.

CuNi6’s resistivity (15 µΩ·cm at 20°C) makes it great for thermocouples and sensors, while CuNi8’s higher resistivity (20 µΩ·cm) suits applications needing slightly more resistance. Both alloys offer excellent corrosion resistance, handling harsh environments like saltwater or chemical exposure with ease. They operate reliably up to 300°C (CuNi6) and 350°C (CuNi8), making them perfect for industrial applications. We’ve optimized our production process to deliver wires that are durable, reliable, and ready for the toughest challenges.

For more details, pls directly contact us.

CuNi6 and CuNi8 are built to perform where durability and precision matter most. CuNi6, with 6% nickel, offers a balanced resistivity for thermocouples and sensors in industrial automation, while CuNi8, with 8% nickel, provides slightly higher resistivity for applications like precision resistors in harsh environments. Compared to lower-nickel alloys like CuNi2, both offer better corrosion resistance, and they’re more cost-effective than high-nickel alloys like Constantan 6J40.

Their thermal conductivity—50 W/mK (CuNi6) and 45 W/mK (CuNi8)—ensures efficient heat transfer, critical for sensors and thermocouples. With tensile strengths of 250 MPa (CuNi6) and 260 MPa (CuNi8), they’re tough enough to handle mechanical stress. Their low temperature coefficient of resistance (TCR) keeps electrical properties stable from -50°C to 300°C (CuNi6) or 350°C (CuNi8). Their excellent corrosion resistance makes them ideal for environments with saltwater, chemicals, or high humidity, ensuring long-term reliability for industrial sensors.

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

For more details, pls directly contact us.

The copper-nickel alloy market is booming, driven by growing demand for corrosion-resistant materials in marine, automotive, and chemical processing industries. Industrial sensors are seeing increased adoption as companies embrace automation, IoT, and real-time monitoring. The global sensor market is expected to grow at a CAGR of around 6.8% through 2030, fueled by advancements in smart manufacturing, electric vehicles (EVs), and environmental monitoring systems.

CuNi6 and CuNi8 wires are perfectly positioned in this landscape. Their medium resistivity and strong corrosion resistance make them ideal for sensors and thermocouples in harsh environments, like marine or chemical processing plants. The rise of EVs and renewable energy systems, such as wave and tidal energy, is boosting demand for durable alloys that can handle corrosive conditions. Meanwhile, the push for precision in industrial automation is driving the need for reliable sensor materials, where CuNi6 and CuNi8 shine.

Sustainability is a major trend shaping the industry. Companies are seeking eco-friendly materials to meet environmental regulations, and our CuNi6 and CuNi8 wires deliver. Produced with energy-efficient processes, they’re fully recyclable, helping you achieve green goals without sacrificing performance. The trend toward miniaturization in electronics is another driver, with industries demanding thinner wires for compact sensor designs. Our ability to produce wires as fine as 0.01mm keeps us ahead of the curve.

Emerging technologies, like smart sensors for environmental monitoring and IoT-enabled industrial systems, are increasing the demand for corrosion-resistant alloys. These systems require materials that maintain accuracy in tough conditions, and CuNi6 and CuNi8 are up to the task. As industries continue to innovate, the demand for high-performance alloys like these will keep growing.

Applications of CuNi6 and CuNi8 Copper-Nickel Wire

Our CuNi6 and CuNi8 wires are versatile materials with a wide range of applications. Here’s where they make an impact:

• Industrial Sensors: Their corrosion resistance and stable electrical properties make them ideal for temperature and pressure sensors in marine, chemical, and industrial automation systems.

• Thermocouples: CuNi6 is perfect for Type T and J thermocouples in industrial processes, while CuNi8 suits applications needing higher resistivity.

• Precision Resistors: Both alloys are used in resistors for automotive, telecommunications, and industrial equipment, ensuring accurate performance in harsh conditions.

• Marine Applications: Their resistance to saltwater corrosion makes them suitable for sensors and electrical components in ships and offshore platforms.

• Automotive Systems: From EV battery sensors to engine control units, they provide reliable performance in moderately corrosive environments.

• Renewable Energy: In wave and tidal energy systems, they’re used in sensors that require durability in harsh outdoor conditions.

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

Comparison Table: CuNi6 vs. CuNi8 vs. CuNi2 vs. Constantan 6J40

Property	CuNi6	CuNi8	CuNi2	Constantan 6J40
Nickel Content (%)	6	8	2	40
Resistivity at 20°C (µΩ·cm)	15	20	8	49
Max Operating Temp (°C)	300	350	250	600
Thermal Conductivity (W/mK)	50	45	65	23
Tensile Strength (MPa)	250	260	220	420
Corrosion Resistance	Good	Very Good	Good	Excellent
Applications	Sensors, thermocouples, resistors	Sensors, thermocouples, resistors	Resistors, heating	Precision resistors, thermocouples
Cost Efficiency	High	High	Very High	Moderate

We’re not just a supplier—we’re a leader in delivering high-quality CuNi6 and CuNi8 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 sensors, thermocouples, or resistors.

• 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 advantage. We deliver products tailored to your needs and built to perform in harsh industrial environments.

Looking Forward

The future of CuNi6 and CuNi8 Copper-Nickel Wire is bright. As industries like marine, automotive, and chemical processing continue to grow, the demand for corrosion-resistant, high-performance alloys will soar. We’re committed to staying ahead, investing in R&D to enhance our wires’ properties and meet emerging challenges. From developing finer wires for compact sensors to improving corrosion resistance for next-generation applications, we’re always innovating.

Our CuNi6 and CuNi8 wires are critical components in the systems driving modern industries. From sensors in marine monitoring systems to thermocouples in EVs, they’re small but essential parts of the bigger picture. We’re excited to support our customers in building reliable, sustainable 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.

Client Visits

Building Stronger Partnerships

We support all kinds of testing:

FAQs：

1. What is Corrosion-Resistant CuNi6 CuNi8 Copper-Nickel Wire used for?
   It’s used for industrial sensors, thermocouples, and precision resistors in industries like marine, automotive, and chemical processing.

2. Why are CuNi6 and CuNi8 ideal for industrial sensors?
   Their medium resistivity and strong corrosion resistance ensure reliable performance in harsh industrial environments.

3. Which industries rely on CuNi6 and CuNi8 Wire?
   Marine, automotive, chemical processing, renewable energy, and industrial automation use them for sensors and resistors.

4. How do CuNi6 and CuNi8 compare to other copper-nickel alloys?
   With 6% (CuNi6) and 8% (CuNi8) nickel, they offer higher corrosion resistance than CuNi2 and better cost-efficiency than Constantan.

5. What are the temperature limits for CuNi6 and CuNi8 Wire?
   CuNi6 operates from -50°C to 300°C; CuNi8 up to 350°C, suitable for medium-temperature sensor applications.

6. Are CuNi6 and CuNi8 resistant to corrosion?
   Yes, both provide excellent corrosion resistance in harsh environments, including saltwater and chemical exposure.

7. Can CuNi6 and CuNi8 Wire be customized for specific projects?
   We offer customizable wire diameters, from 0.01mm to 3mm, tailored to meet your project requirements.

8. What’s the lifespan of CuNi6 and CuNi8 in sensor applications?
   With proper use, they deliver consistent performance for years in corrosive, industrial settings.