High-Quality CuNi2 Round Bar for Industrial and Electrical Use

The CuNi2 6 round bar is a copper-nickel alloy product developed for industries that demand reliable resistance performance, excellent durability, and corrosion resistance. With a nickel content ranging from 2% to 6%, this alloy achieves a balanced profile: high resistance for electrical applications, stable mechanical strength for industrial systems, and strong corrosion resistance for marine and offshore environments.

At DLX, we supply high-quality CuNi2 6 round bars that meet international standards and client-specific requirements. Every bar is manufactured using precision processes, ensuring uniform composition and reliable electrical and mechanical performance.

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The global demand for copper-nickel alloys has been on the rise due to their unique combination of electrical and corrosion-resistant properties. CuNi2 6 has gained recognition as a versatile alloy that bridges the gap between lower-nickel alloys such as CuNi1 and higher-nickel compositions like CuNi6 or CuNi19.

In the electronics industry, CuNi2 6 is valued for its stable resistance, making it suitable for precision resistors, connectors, and measuring devices. In the energy sector, it is a preferred material for heating elements and power systems requiring reliable resistance under thermal load. The marine industry also benefits from CuNi2 6’s ability to resist seawater corrosion while maintaining conductivity, making it a cost-effective solution for shipboard and offshore components.

As industries increasingly shift toward energy efficiency, advanced electronics, and sustainable materials, CuNi2 6 round bars are expected to maintain strong demand.

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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• Resistors and Electrical Components – Ensures stable resistance and reliability in electronics.

• Heating Elements – Provides consistent thermal performance for industrial heating systems.

• Marine Applications – Ideal for connectors, fasteners, and equipment exposed to seawater.

• Automotive Electrical Systems – Used in vehicle wiring and resistance-based components.

• Instrumentation and Sensors – Offers accuracy and durability in sensitive measuring equipment.

• Industrial Equipment – Supports machinery requiring stable electrical resistance and mechanical integrity.

• Energy Infrastructure – Used in renewable energy and power generation systems for resistance applications.

Industry Trends

• Electronics Miniaturization – Growing need for alloys with precise resistance values for compact components.

• Renewable Energy Expansion – Heating and electrical systems in renewable projects demand stable alloys.

• Marine and Offshore Growth – Expansion of desalination plants and offshore structures increases copper-nickel usage.

• Sustainability Focus – Recyclability of copper-nickel alloys positions them as environmentally responsible materials.

Comparison with Other Alloys
CuNi2 6 round bars outperform CuNi1 in terms of resistance, making them more suitable for electrical and heating applications. Compared to CuNi6, CuNi2 6 provides a balance between performance and cost, making it a popular choice across diverse industries. Its versatility allows companies to integrate it across marine, electrical, and industrial applications without compromising on reliability.

At DLX, we are committed to delivering CuNi2 6 round bars that exceed expectations. Our advantages include:

• Consistent Quality – Every bar is manufactured under strict quality control, ensuring uniform resistance and strength.

• Customization – We offer tailored dimensions, finishes, and resistance properties to fit client-specific applications.

• Global Standards Compliance – Our CuNi2 6 products meet ASTM, EN, and DIN standards, ensuring worldwide acceptance.

• Durability Assurance – All products are tested for long-term stability in challenging environments.

• Technical Support – Our team works with clients to recommend the right alloy and optimize usage.

• Reliable Logistics – DLX ensures timely global delivery to support uninterrupted production schedules.

Comparison Table

• A European electronics company used DLX CuNi2 6 round bars in resistor production, achieving greater precision and product reliability.

• An Asian marine engineering project incorporated DLX round bars in seawater piping connectors, enhancing corrosion resistance and service life.

• A North American heating equipment manufacturer relied on DLX CuNi2 6 round bars for industrial heating elements, benefiting from stable resistance under thermal load.

The demand for copper-nickel alloys like CuNi2 6 is expected to remain strong in the coming years. As industries expand their reliance on renewable energy, advanced electronics, and marine infrastructure, alloys with dependable resistance properties will continue to be vital.

At DLX, we are investing in innovation and precision manufacturing to meet the evolving needs of global industries. By combining technical expertise with customer-focused service, we aim to lead the copper-nickel alloy market and support our clients with reliable, future-ready solutions.

Conclusion
CuNi2 6 round bars represent an ideal combination of resistance performance, mechanical strength, and corrosion resistance. From electronics and marine systems to industrial machinery and renewable energy projects, they are indispensable materials for modern applications.

At DLX, we provide not only the highest-quality CuNi2 6 round bars but also the expertise and service to ensure our clients achieve maximum performance from every order. By choosing DLX, clients secure a trusted partner dedicated to delivering innovation, durability, and precision in copper-nickel alloy solutions.

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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:

• What is the composition of CuNi2 6 round bar?
  It contains 2–6% nickel with copper as the primary element, along with trace additions for stability.

• What are the main features of CuNi2 6 alloy?
  It offers stable electrical resistance, good corrosion resistance, and reliable mechanical strength.

• Where is CuNi2 6 round bar commonly applied?
  It is widely used in electrical resistors, connectors, heating systems, and industrial machinery.

• Does CuNi2 6 alloy resist seawater corrosion?
  Yes, it performs well in marine environments, making it suitable for offshore and shipboard systems.

• How does CuNi2 6 compare with CuNi1 or CuNi6 alloys?
  It provides higher resistance than CuNi1 and a balanced cost-performance ratio compared to CuNi6.

• Is CuNi2 6 suitable for high-temperature environments?
  Yes, it maintains stable resistance and mechanical integrity under thermal stress.

• What industries prefer CuNi2 6 round bars?
  Electronics, marine, energy, automotive, and general industrial equipment manufacturing.

• Can CuNi2 6 be customized for specific applications?
  Yes, it can be machined, processed, and supplied in different sizes, finishes, and resistance ranges.