Our CuNi1 flat wire, straight from our OEM factory, is a killer choice for applications needing corrosion resistance and affordability, and we’re stoked to share what makes it so awesome. This copper-nickel alloy, with just ~1% nickel, is designed for industries that want reliable performance without breaking the bank.

CuNi1 is a champ at fighting corrosion, especially in marine or humid environments, thanks to a protective oxide layer that keeps it solid over time. It’s stable up to 200°C, making it perfect for low-to-moderate heat applications like electrical connectors, heating cables, or low-power resistors. The flat wire shape is a big win—its larger surface area boosts heat dissipation and makes it easier to fit into tight spaces compared to round wires. With a tensile strength of ~300 MPa, it’s tough enough for everyday use.

The electrical resistivity, around 0.10 µΩ·m, is super consistent, ensuring steady performance in precision circuits or sensors. Its thermal conductivity, ~50 W/mK, is way higher than most resistance alloys, so it handles heat efficiently, which is great for applications needing quick thermal response. We can roll it into ultra-thin, flat strips, perfect for custom designs in electronics or heating systems.

The industry in 2025 is all about cost-efficiency and sustainability, and our CuNi1 flat wire nails both. There’s a growing demand for affordable, corrosion-resistant materials in marine, automotive, and consumer electronics sectors. Being 100% recyclable, it’s a perfect fit for eco-friendly manufacturing trends. As compact, low-power devices keep trending, this wire’s formability and low cost make it a go-to for high-volume production.

Sure, CuNi44 Constantan offers higher heat resistance, and Nichrome Cr20Ni80 can handle scorching temperatures, but CuNi1’s low resistivity and unbeatable price make it ideal for low-heat, corrosion-prone applications. Just keep it away from high-temperature environments, though it thrives in most conditions like a pro.

From marine electrical systems to precision resistors, our factory-direct CuNi1 flat wire delivers the corrosion resistance, flexibility, and value that keep manufacturers humming and budgets happy.

Properties:

1. Corrosion Resistance:

• Good resistance to corrosion, particularly in marine and industrial environments.

2. Electrical Conductivity:

• Maintains good electrical conductivity, though slightly less than pure copper due to the nickel content.

3. Thermal Conductivity:

• High thermal conductivity, making it effective for heat dissipation.

4. Ductility:

• Highly ductile, allowing it to be easily formed into flat wires and other shapes.

5. Mechanical Strength:

• Moderate mechanical strength, which can be enhanced through work hardening.

6. Non-Magnetic:

• Non-magnetic nature, which is beneficial for certain electronic and precision applications.

Applications:

1. Electrical Connectors and Components:

• Used in electrical connectors and components where reliable conductivity and corrosion resistance are required.

2. Heating Element s:

• Suitable for use in heating elements due to its ability to conduct heat effectively.

3. Marine Applications:

• Used in marine hardware and components because of its excellent resistance to seawater corrosion.

4. Industrial Equipment:

• Employed in various industrial applications, such as in the production of pumps and valves exposed to corrosive environments.

5. Aerospace and Automotive:

• Utilized in aerospace and automotive industries for components that require a combination of strength, conductivity, and resistance to harsh environments.

6. Instrumentation:

• Used in precision instrumentation and measurement devices where stable conductivity and corrosion resistance are crucial.

7. Jewelry and Decorative Items:

• Occasionally used in the jewelry industry for its aesthetic appearance and workability.

Specific Form - Flat Wire:

• Advantages of Flat Wire:

• Space Efficiency: Flat wire can be used in applications where space is limited, as it can be packed more densely than round wire.

• Ease of Handling: Easier to handle and install in certain applications due to its flat shape.

• Improved Contact: Provides better surface contact in electrical applications, enhancing conductivity.

• Flexibility: Offers greater flexibility in design and can be used in a variety of custom shapes and sizes.

CuNi Series

Cuni1 is a kind of copper nickel alloy, which have low resistivity for use at temperature upt to 200 ℃. CuNi1 Copper nickel alloy also has good heat-resistant and corrosion-resistant, easy to be processed and lead welded. It is used to make the key components in the thermal overload relay, low resistance thermal circuit breaker, and the electrical appliances. It is also an important material for electrical heating cable.

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. We also provide chemical analysis reports for every FeCrAl alloy, NiCr alloy, and other products purchased.

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

Why use CuNi1 flat wire for electrical applications?

Its corrosion resistance and stable resistivity make it ideal for reliable, low-heat electrical systems.

How does CuNi1 compare to higher-nickel CuNi alloys like CuNi44?

CuNi1 has lower nickel (~1%), making it cheaper but less heat-resistant than CuNi44.

Can CuNi1 flat wire handle marine environments?

Yup, its corrosion resistance is perfect for salty, humid conditions.

What’s the benefit of its flat wire shape?

It maximizes surface area for better heat dissipation and easier installation in tight spaces.

Is CuNi1 wire suitable for high-temperature applications?

It’s good up to 200°C, but for hotter setups, higher-nickel alloys are better.

Is this CuNi1 wire recyclable?

100% recyclable, aligning with eco-friendly manufacturing trends.

Can it be used in precision resistors?

Absolutely, its stable resistivity makes it great for low-power, precise applications.

Is CuNi1 flat wire cost-effective?

Yes, its low nickel content keeps costs down while delivering solid performance.