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Copper Alloys CU-NI 90/10 | Product Overview
Introduction To Copper Alloys CU-NI 90/10 / UNS C70600 / CW352H
MOKSH TUBES & FITTINGS LLP is a trusted manufacturer, supplier, exporter, importer, and stockist of Copper Nickel 90/10 (UNS C70600 / CW352H) products. We supply a comprehensive range including Seamless & Welded Pipes and Tubes, Plates, Sheets, Rods, Bars, Pipe Fittings, Flanges, Wires, Fasteners, and Custom Engineered Components.
Copper Alloys CU-NI 90/10, is a corrosion-resistant alloy known for its excellent performance in marine and seawater environments. It offers strong resistance to biofouling, erosion, and stress corrosion cracking. With good mechanical strength, weldability, and thermal stability, CU-NI 90/10 is ideal for shipbuilding, desalination plants, power generation, offshore oil & gas systems, and heat exchanger applications.
Chemical Composition
| Element | Composition (%) |
|---|---|
| Copper | Balance |
| Nickel | 9.0 – 11.0 |
| Iron | 1.0 – 1.8 |
| Manganese | 1.0 max |
| Zinc | 1.0 max |
| Lead | 0.05 max |
| Others | 0.50 max (total) |
Technical Composition
Physical Properties
| Property | Imperial | Metric |
|---|---|---|
| Density | 0.323 lb/in³ | 8.94 g/cm³ |
| Melting Point | 2260 – 2370 °F | 1240 – 1300 °C |
| Thermal Conductivity | 26 Btu/ft·hr·°F | 45 W/m·K |
| Electrical Resistivity | 207 ohm·cmil/ft | 0.345 µΩ·m |
| Specific Heat Capacity | 0.09 Btu/lb·°F | 0.38 J/g·K |
| Coefficient of Expansion | 9.8 x 10⁻⁶ /°F | 17.6 x 10⁻⁶ /°C |
Mechanical Properties
| Property | Annealed | Cold-Drawn / Tubing | Rod / General Use |
|---|---|---|---|
| Tensile Strength (ksi / MPa) | 300–414 MPa (44–60 ksi) | 345–485 MPa (50–70 ksi) proof strength for tubing | 310–480 MPa (45–70 ksi) |
| Yield Strength (0.2%) (ksi / MPa) | 100–300 MPa (15–43 ksi) | Same as above: 345 MPa (50 ksi) (tubing) | 105–240 MPa (15–35 ksi) |
| Elongation (%) | 42% typical | — | 25–35% (rod) |
| Brinell Hardness (HB) | 70–120 HB | 70–120 HB (tubing) | — |
| Rockwell Hardness (B) | R290 (70–110 HB) | H08/H06/H04 spring temp up to 87–91 B | — |
Products in Copper Alloys CU-NI 90/10
Copper Alloys CU-NI 90/10 is available in:
Copper Alloys CU-NI 90/10 products are produced to the following global standards:
Uses and Advantages
Performs exceptionally in seawater, brine, and salt-laden environments.
Excellent material for flow systems exposed to turbulent or high-velocity fluids.
Suitable for brazing, soldering, and welding using common processes.
Reliable mechanical properties retained over a wide range of pressures and temperatures.
Supports heat transfer applications like condensers, evaporators, and water heaters.
Applications of Copper Alloys CU-NI 90/10
Copper Alloys CU-NI 90/10 is widely used in marine, industrial, and thermal transfer systems where strength and corrosion resistance are critical:
Marine & Shipbuilding
Seawater piping, cooling systems, hull cladding, condensers, water intakes, propeller sleeves.
Heat Exchangers & Condensers
Tubes and shells in desalination, power plants, HVAC, and oil refineries.
Offshore Oil & Gas
Seawater injection systems, firewater systems, pump components.
Power Generation
Feedwater heaters, brine heaters, and cooler components in thermal and nuclear plants.
Desalination & Water Treatment
Evaporator tubes, piping, and brine discharge lines.
Automotive & Locomotive Industry
Brake lines, hydraulic lines, and radiator components.
Welding Consumables & Filler Metals
Used in welding of similar alloys and repair work.
WHY CHOOSE US?
FAQ's
What is Copper Nickel 90/10 and what makes it a preferred alloy?
Copper Nickel 90/10, also known as UNS C70600 or CW352H, is an alloy consisting of 90% copper and 10% nickel with small additions of iron and manganese. It is widely valued for its excellent corrosion resistance in seawater and marine environments, making it a reliable material for shipbuilding, desalination plants, offshore oil and gas, and power generation industries.
What are the main advantages of using Copper Nickel 90/10 alloy?
The CU-NI 90/10 alloy offers strong resistance to biofouling, erosion, and stress corrosion cracking. It retains reliable mechanical properties over a wide temperature and pressure range, making it suitable for demanding flow systems and thermal applications. With good weldability, soldering, and brazing capability, Copper Nickel 90/10 ensures ease of fabrication while maintaining long term durability in harsh operating conditions.
What are the common applications of Copper Nickel 90/10?
Copper Nickel 90/10 is extensively used in marine and shipbuilding for seawater piping, condensers, cooling systems, hull cladding, and propeller sleeves. It is also widely applied in desalination plants, HVAC systems, oil refineries, and power plants for heat exchangers, condensers, brine heaters, and evaporator tubes. Additionally, it finds use in offshore oil and gas systems, automotive brake lines, and locomotive radiator components due to its corrosion resistance and thermal stability.
What Copper Nickel 90/10 products are available at MOKSH TUBES & FITTINGS LLP?
MOKSH TUBES & FITTINGS LLP supplies a wide range of Copper Nickel 90/10 products including seamless and welded pipes and tubes, plates, sheets, coils, strips, rods, bars, pipe fittings, flanges, wires, fasteners, and custom-engineered components. All products are manufactured to meet global quality standards such as ASTM, DIN, EN, and ASME, and can be tailored in size, finish, and specifications to match specific industrial requirements.
Why choose MOKSH TUBES & FITTINGS LLP for Copper Nickel 90/10 materials?
MOKSH TUBES & FITTINGS LLP is a trusted manufacturer, supplier, and exporter of Copper Nickel 90/10 products, offering marine-grade and industrial-grade materials sourced from reputed mills. With extensive inventory, competitive pricing, and global supply capabilities, the company ensures timely delivery and quality assurance. Backed by expertise in copper nickel alloys, it serves clients across shipyards, desalination projects, offshore oil and gas, power plants, and automotive industries with certified and reliable CU-NI 90/10 solutions.
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