International Equivalents :
UNS C71500, CuNi30Mn1Fe, CW354H
International Equivalents :
UNS C71500, CuNi30Mn1Fe, CW354H
Manufacturing Type :
Seamless, Welded, ERW, EFW
Material Designation :
Copper Nickel 70/30 (UNS C71500 / WNR 2.0882)
Applicable Standards :
ASTM B466, ASTM B467, ASME SB466, ASME SB467
When industrial operations demand exceptional seawater corrosion resistance, long service life, and reliable mechanical performance, choosing the right piping material becomes critical. As a trusted Copper Nickel 70/30 Pipes Supplier, we provide high-performance piping and tubing solutions engineered for marine, offshore, power generation, and desalination industries where conventional materials often struggle to deliver long-term durability.
Manufactured from a copper-nickel alloy containing approximately 70% copper and 30% nickel, these pipes and tubes offer outstanding resistance to seawater corrosion, biofouling, erosion, and cavitation damage. Their unique metallurgical composition makes them one of the most preferred materials for aggressive marine environments and critical cooling water systems.
Why Choose Copper Nickel 70/30 Pipes and Tubes?
Copper Nickel 70/30 alloys are specifically developed for applications involving continuous exposure to seawater and harsh coastal environments. Compared to standard piping materials, they provide superior corrosion protection, excellent heat transfer efficiency, and enhanced mechanical strength.
Key advantages include:
These characteristics make Copper Nickel 70/30 one of the best material choices for marine and industrial fluid transportation systems.
Available Product Range
As an experienced Copper Nickel 70/30 Tubes Manufacturer and supplier, we offer:
All products are manufactured according to international standards and undergo strict quality inspections to ensure dimensional accuracy and reliable field performance.
The Ideal Choice for Seawater Systems
What is the best pipe material for seawater systems?
Copper Nickel 70/30 is widely considered one of the most effective materials for seawater handling applications due to its natural resistance to marine corrosion and biological fouling.
Unlike conventional alloys, Copper Nickel 70/30 develops a protective surface film that minimizes corrosion while maintaining excellent flow efficiency. This makes it highly suitable for:
Exceptional Heat Transfer and Thermal Performance
One of the major advantages of Copper Nickel 70/30 is its excellent thermal conductivity and heat transfer efficiency.
These properties make the alloy particularly valuable for:
Its ability to transfer heat efficiently contributes to improved system performance and energy efficiency.
Resistance to Erosion and Biofouling
Can Copper Nickel 70/30 resist biofouling?
Yes. Copper Nickel 70/30 possesses natural anti-fouling characteristics that help reduce marine organism growth on internal pipe surfaces.
In addition, its outstanding cavitation resistance and erosion resistance allow it to perform effectively in high-velocity seawater systems where many materials experience premature wear.
This combination of durability and corrosion resistance significantly extends service life while reducing maintenance costs.
Industries Served
Copper Nickel 70/30 pipes and tubes are extensively used across multiple industries, including:
Offshore Engineering
Ideal for offshore platforms, subsea piping, and marine infrastructure exposed to aggressive seawater conditions.
Shipbuilding Industry
Trusted for seawater piping systems, ballast lines, and onboard cooling networks.
Desalination Plants
Provides dependable long-term performance in saline water processing facilities.
Industrial Cooling Systems
Used as Copper Nickel 70/30 Cooling Water Pipes for efficient thermal management and corrosion protection.
How to Choose Copper Nickel 70/30 Pipes and Tubes
Selecting the right Copper Nickel 70/30 piping solution depends on:
Working with an experienced Copper Nickel 70/30 Pipe Distributor helps ensure the correct material specification for long-term operational success.
As a leading Copper Nickel 70/30 Pipes Supplier, we provide premium-quality pipes and tubes engineered for demanding marine, offshore, and industrial applications. Combining exceptional corrosion resistance, heat transfer efficiency, pressure handling capability, and long-term reliability, Copper Nickel 70/30 remains one of the most trusted alloy solutions for seawater and cooling water systems worldwide.
| STANDARD | UNS | WNR. |
|---|---|---|
| Copper Nickel 70/30 | C71500 | 2.0882 |
Copper Nickel 70/30 Seamless Pipes
Premium seamless Cu-Ni pipes engineered for offshore platforms, seawater pipelines, and marine systems requiring superior corrosion and pressure resistance.
Copper Nickel 70/30 Welded Pipes
Durable welded pipes designed for shipbuilding, desalination plants, and industrial cooling water systems exposed to aggressive seawater conditions.
Copper Nickel 70/30 ERW Pipes
Precision ERW pipes offering excellent biofouling resistance, thermal conductivity, and long-term performance in marine applications.
Copper Nickel 70/30 Seamless Tubes
High-performance seamless tubes developed for condensers, heat exchangers, and seawater handling systems requiring reliable heat transfer efficiency.
Copper Nickel 70/30 Welded Tubes
Corrosion-resistant welded tubes suitable for offshore engineering, power generation, and coastal industrial processing facilities.
Copper Nickel 70/30 ERW Tubes
Engineered ERW tubes providing exceptional erosion resistance and durability in high-velocity seawater and cooling circuit applications.
International Equivalents :
UNS C71500, CuNi30Mn1Fe, CW354H
Manufacturing Type :
Seamless, Welded, ERW, EFW
Material Designation :
Copper Nickel 70/30 (UNS C71500 / WNR 2.0882)
Applicable Standards :
ASTM B466, ASTM B467, ASME SB466, ASME SB467
Alloy Composition :
70% Copper, 30% Nickel with Iron & Manganese
Seawater Resistance :
Excellent resistance to seawater corrosion, erosion, and biofouling
Operating Environment :
Suitable for marine, offshore, and chloride-rich service
Weldability :
Excellent fabrication and welding characteristics
Pressure Capability :
Designed for medium and high-pressure piping systems
Quality Verification :
PMI, Hydrostatic Test, Eddy Current Test (ECT), UT, Chemical & Mechanical Testing
Certification :
EN 10204 3.1 / MTC with Full Material Traceability
Industrial Applications :
Offshore Platforms, Shipbuilding, Desalination Plants, Heat Exchangers, Condensers, Seawater Cooling Systems
Chemical Composition of Copper Nickel 70/30 Pipes & Tubes
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
|---|---|---|---|---|---|---|
| Cu-Ni 70-30 | 65.0 min | 1 max | .05 max | 29-33 | 0.4-1.0 | 1 max |
Mechanical Properties of Cu-Ni 70/30 Pipes and Tubing
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength, ultimate | 372-517 MPa | 54000-75000 psi |
| Tensile strength, yield (depending on temper) | 88.0-483 MPa | 12800-70100 psi |
| Elongation at break (in 381 mm) | 45.0% | 45.0% |
| Charpy impact | 107 J | 78.9 ft-lb |
| Machinability (UNS C36000 (free-cutting brass) = 100%) | 20% | 20% |
| Shear modulus | 57.0 GPa | 8270 ksi |
| Poisson's ratio | 0.34 | 0.34 |
| Elastic modulus | 150 GPa | 21800 ksi |
Physical Properties of Cupro Nickel 70/30 Pipes & Tubes
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.94 g/cm3 | 0.323 lb/in3 |
| Melting point | 2140°F | 1171°C |
Our Copper Nickel 70/30 Pipes and Tubes are used in a wide range of applications and various industries. Below are a few of them:
Application Industries
Aerospace Industry
Food Processing Industry
Pulp & Paper Indusry
Energy Industry
Pharmaceuticals Industry
Power Plant Industry
Chemical Industry
Oil and Gas Industry
Get clear answers to common queries about our steel products, services, and delivery processes.
Copper Nickel 70/30 Pipes and Tubes are high-performance alloy products manufactured from approximately 70% copper and 30% nickel, with small additions of iron and manganese to enhance strength and corrosion resistance. They are specifically engineered for demanding marine and industrial environments where exposure to seawater, salt-laden atmospheres, and corrosive chemicals is common. These pipes and tubes are extensively used in shipbuilding, offshore platforms, desalination plants, power stations, condensers, heat exchangers, and offshore oil and gas facilities due to their exceptional durability and long service life.
Copper Nickel 70/30 Pipes and Tubes are widely preferred for marine applications because they offer outstanding resistance to seawater corrosion, erosion-corrosion, biofouling, and chloride attack. The alloy develops a naturally protective oxide film that prevents rapid deterioration even under continuous seawater exposure. Its excellent mechanical strength and reliability make it suitable for high-velocity seawater systems, cooling circuits, firewater pipelines, and naval vessels operating in harsh marine conditions.
Copper Nickel 70/30 Pipes and Tubes are extensively used across marine, offshore, desalination, power generation, petrochemical, chemical processing, LNG, and shipbuilding industries. They are ideal for applications such as heat exchangers, condensers, cooling water systems, hydraulic tubing, offshore piping networks, and coastal infrastructure where superior corrosion resistance and long-term operational reliability are essential.
Copper Nickel 70/30 contains a higher percentage of nickel than Copper Nickel 90/10, resulting in greater mechanical strength and superior resistance to erosion-corrosion in high-velocity seawater systems. While both alloys provide excellent corrosion resistance, Copper Nickel 70/30 is generally selected for more demanding offshore, naval, and industrial applications where higher flow rates, elevated pressures, and severe operating conditions require enhanced durability.
Copper Nickel 70/30 Pipes and Tubes are manufactured according to internationally recognized standards such as ASTM B466, ASTM B467, ASTM B111, ASME SB466, ASME SB467, and UNS C71500. Compliance with these specifications ensures consistent chemical composition, dimensional accuracy, mechanical properties, corrosion resistance, and overall product quality suitable for global engineering projects.
Yes. Copper Nickel 70/30 Pipes and Tubes maintain excellent mechanical strength, corrosion resistance, and structural stability across a wide temperature range. Their ability to withstand elevated pressures and thermal cycling makes them suitable for condensers, heat exchangers, pressure piping systems, offshore processing facilities, power plants, and marine cooling systems where long-term reliability is critical.
The exceptional seawater corrosion resistance of Copper Nickel 70/30 Pipes and Tubes comes from the formation of a stable protective oxide layer on the metal surface. This natural barrier protects the alloy against pitting, crevice corrosion, erosion-corrosion, impingement attack, and marine biofouling. As a result, the material performs exceptionally well in continuously submerged seawater environments with minimal maintenance requirements.
Yes. Copper Nickel 70/30 Pipes and Tubes possess excellent weldability, formability, and fabrication characteristics, allowing them to be welded, bent, expanded, and machined using standard industrial processes. Proper welding procedures help preserve the alloy's corrosion resistance and mechanical integrity, making installation efficient for complex marine and industrial piping systems.
Although Copper Nickel 70/30 Pipes and Tubes may involve a higher initial investment than conventional materials, they significantly reduce lifecycle costs through their outstanding corrosion resistance, extended service life, minimal maintenance requirements, lower replacement frequency, improved operational efficiency, and reduced downtime. These advantages make them an economical choice for critical infrastructure operating in aggressive environments.
When selecting a Copper Nickel 70/30 Pipes and Tubes supplier, buyers should evaluate the manufacturer's compliance with ASTM and ASME standards, availability of Mill Test Certificates (MTC), third-party inspection reports, manufacturing capabilities, quality assurance processes, inventory range, customization options, export experience, and technical support. Partnering with a reputable manufacturer or supplier helps ensure consistent product quality, timely delivery, full material traceability, and dependable performance for marine, offshore, power generation, and industrial applications.
Our Location
Flat no 5, Swapna HSG Soc
Ltd., Charkop, Kandivali West,
Mumbai, Maharashtra, India.
400067
