High-Performance CuNi23 Alloy Round Bar for Industrial Equipment

The demand for alloys that can survive aggressive industrial environments has never been higher. Copper-nickel alloys, particularly CuNi23 34 round bars, have become indispensable materials in industries where seawater, corrosive gases, and high-pressure systems are daily challenges. These alloys deliver a perfect balance of strength, corrosion resistance, and long-term reliability.

At DLX, we specialize in producing high-quality CuNi23 34 alloy round bars that meet strict international standards. With our advanced manufacturing processes, we provide materials that not only perform in harsh conditions but also extend equipment service life and reduce overall maintenance costs.

For more details, pls directly contact us.
Global industries such as marine engineering, petrochemical processing, and power generation are increasingly moving toward copper-nickel alloys for critical applications. The rise in desalination plants, offshore energy projects, and naval infrastructure has led to an upsurge in demand for high-performance alloys like CuNi23 34.

Compared to traditional materials, copper-nickel alloys stand out because they do not suffer from rapid degradation when exposed to seawater. CuNi23 34, with its optimized nickel content, has proven to be a reliable choice for industries seeking both durability and cost efficiency.

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.

• Shipbuilding and Marine Systems – Used in piping, valves, and condenser components exposed to seawater.

• Industrial Equipment – Provides long-lasting performance in chemical processing and power generation systems.

• Desalination Plants – Applied in seawater intake and brine discharge systems.

• Heat Exchangers – Essential for condensers in power plants and petrochemical refineries.

• Offshore Structures – Risers, platforms, and pipelines benefit from its corrosion resistance.

• Electrical Applications – Provides conductivity and strength for specialized connectors.

The global shift toward renewable energy and sustainable infrastructure has increased the adoption of copper-nickel alloys. Offshore wind farms, desalination projects, and power plants demand materials that can withstand constant seawater exposure without failure.

Additionally, industries are prioritizing materials with long lifespans to reduce environmental impact through fewer replacements. CuNi23 34 meets these requirements by offering durability, recyclability, and energy efficiency in operation.

Comparison Table

CuNi23 and CuNi34 share similar corrosion-resistant properties, but CuNi34 offers slightly higher protection in extremely aggressive conditions. However, CuNi23 balances strength, weldability, and cost, making it highly attractive for industrial applications where performance and efficiency must be optimized.

At DLX, our focus is on delivering copper-nickel alloys that exceed customer expectations. We combine advanced manufacturing techniques with rigorous quality control to ensure that every CuNi23 34 bar meets global standards.

Our advantages include:

• Comprehensive Alloy Range – Covering CuNi2, CuNi6, CuNi14, CuNi19, CuNi23, and CuNi34 grades.

• Customization – Tailor-made sizes, tolerances, and finishes for specific project needs.

• Stringent Quality Assurance – Every bar undergoes testing for strength, corrosion resistance, and dimensional accuracy.

• Expert Guidance – Technical support to assist clients in material selection and project integration.

• Global Delivery Network – Fast and reliable logistics to keep projects on schedule.

• Power Plant in the Middle East – DLX supplied CuNi23 34 round bars for condenser systems, ensuring high thermal efficiency and seawater resistance.

• Shipyard in Europe – CuNi23 bars were installed in seawater pipelines, providing long-term durability with minimal maintenance.

With global industries moving toward more robust and sustainable materials, the demand for copper-nickel alloys is projected to grow steadily. CuNi23 34 bars are expected to see increasing adoption in power plants, offshore platforms, and naval projects.

DLX is positioned to lead this growth by investing in research, expanding capacity, and continuously enhancing our product range. By working closely with our customers, we ensure that our alloys not only meet present requirements but also anticipate future industry challenges.

Conclusion
The CuNi23 34 alloy round bar is more than just a material—it is a solution for industries facing the toughest operating conditions. From shipbuilding to industrial equipment, its combination of corrosion resistance, strength, and durability makes it indispensable.

With DLX as a supplier, customers gain access to not just premium copper-nickel alloys but also to a partnership built on trust, reliability, and expertise. Our dedication to quality and innovation ensures that our CuNi23 34 alloy round bars remain the preferred choice for global industries.

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 the composition of CuNi23 34 alloy round bar?
   It is primarily composed of copper with about 23–34% nickel, along with small amounts of iron and manganese for improved strength and corrosion resistance.

2. Why is CuNi23 34 used in industrial equipment?
   Because of its exceptional resistance to seawater corrosion, high mechanical strength, and long-term durability in aggressive environments.

3. Is CuNi23 34 suitable for marine environments?
   Yes, it is especially designed to withstand seawater and biofouling, making it ideal for shipbuilding and offshore structures.

4. Can CuNi23 34 be welded and machined easily?
   Yes, the alloy has excellent weldability and good machinability, allowing efficient fabrication and installation.

5. What industries commonly use CuNi23 34 bars?
   Marine, power generation, petrochemical, desalination, and heat exchanger industries.

6. How does CuNi23 34 compare to lower nickel alloys?
   It offers significantly higher resistance to corrosion and stress cracking, especially in seawater and acidic conditions.

7. Does this alloy lower maintenance costs?
   Yes, its durability reduces the frequency of replacements and repairs, lowering long-term operating costs.

8. What international standards does CuNi23 34 meet?
   It complies with ASTM, DIN, and EN standards to ensure consistent quality and performance.