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“When the sea corrodes everything but your materials survived— that’s when you know you chose right.”

In environments where saltwater, pressure, and time erode everything, only a few materials stand the test. One of them is DOMADIA™ CuNi30, crafted from Copper-Nickel Alloy UNS C71580. Known for its superior corrosion resistance, structural integrity, and thermal stability, this alloy has quietly become the backbone of some of the most demanding industries.

In this blog, we’ll explore the composition, technical specifications, key properties, real-world applications, and available forms of DOMADIA™ CuNi30 — a material that doesn’t just survive in extreme environments, it thrives.

Chemical Composition of DOMADIA™ CuNi30

DOMADIA™ CuNi30 is part of the 70-30 copper-nickel family. Here’s a breakdown of its key chemical components:

Technical Specifications

• Material No.: UNS C71580
• Equivalent Standard: ASTM F96
• Density: ~8.95 g/cm³
• Melting Point: 1170 – 1240 °C
• Tensile Strength: ~520 MPa
• Yield Strength: ~200 MPa
• Elongation: ~30%
• Thermal Conductivity: ~29 W/m·K
• Electrical Conductivity: ~4 – 7 % IACS

Applications of DOMADIA™ CuNi30 (UNS C71580)

1. Marine Condenser Systems
   Used in naval and commercial marine applications, the alloy resists biofouling and corrosion from high-chloride environments, extending the life of condenser and cooling systems.
2. Desalination Plants
   In salt-laden environments, DOMADIA™ CuNi30 is used for evaporator tubing and heat exchangers, preventing breakdown from high-pressure saline conditions.
3. Microwave Condenser Tubes & Wave Guides
   In addition, due to its dimensional stability and conductivity, it is the go-to material for microwave systems, particularly in wave guides and condenser tubes.
4. Electronics
   High-reliability applications, like defense electronics and offshore instrumentation, rely on CuNi30 for its consistent performance in corrosive atmospheres.
5. Vacuum Electron Devices
   UNS C71580 is commonly used in VEDs due to its stability in high-vacuum, high-frequency environments.
6. Electronic Components
   It is used in connectors, interconnects, and terminals, especially where high conductivity and corrosion resistance are needed.
7. Printed Circuit Boards (PCBs)
   Its controlled electrical properties and reliability under harsh conditions make it suitable for specialty PCBs.
8. Welding Filler Wire
   Used as a filler wire material for welding in applications that demand strong corrosion resistance, according to Shanti Metal Supply Corporation.
9. Brazing Applications
   Copper-nickel alloys like UNS C71580 are suitable for use in brazing operations, where durability and corrosion resistance are important.
10. Shipbuilding Components
    Applied in piping, tubing, and flange systems on ships to combat saltwater exposure.
11. Power Station Cooling Systems
    Used in seawater-cooled power plant condensers and exchangers due to high thermal conductivity and fouling resistance.
12. Oil & Gas Systems (Offshore)
    Ideal for tubing, valves, and heat exchangers in offshore drilling rigs, where saline exposure is constant.
13. Transportation Industry
    Utilized in heat exchanger and fluid transfer systems in heavy vehicles, railcars, and specialty machinery.
14. Renewable Energy Subsystems
    DOMADIA™ CuNi30 is found in offshore wind turbine cooling systems and coastal renewable infrastructure, where corrosion must be minimized.

Available Shapes and Forms

DOMADIA™ CuNi30 is versatile in its availability, ready to meet complex design and fabrication needs. Available forms include:

Key Properties

Industry Standards & Compliance

DOMADIA™ CuNi30 conforms to:

• UNS C71580
• ASTM F96

These ensure global standardization, reliability, and traceability in your projects.

Final Thoughts: Why DOMADIA™ CuNi30?

Let’s face it — seawater doesn’t care about your design specs. It corrodes, clogs, and corrodes some more. But DOMADIA™ CuNi30 (UNS C71580)? It simply doesn’t flinch.

Whether you’re outfitting a ship, cooling a power plant, or sending signals through a microwave guide, this copper-nickel alloy has your back. Engineered to resist the worst nature throws at it, and compliant with global standards like ASTM F96, it’s the kind of material that quietly does its job while everything else around it rusts.

To sum it up:
Don’t just build it to last — build it with DOMADIA™ CuNi30 and watch your problems rust away

Ready to upgrade your system with marine-grade resilience?
Contact us to source DOMADIA™ CuNi30 in your required specifications today.

Visit our website today https://domadia.net/

Talk to us: Kairav Domadia | Aadil Domadia | Er.Pankaj Domadia | Pragati Sanap | Pooja N N | Shivani Kanojia