Home > Copper Nickel > Copper Nickel 70/30 Tube Fittings
From Canberra, Australia, Marsh Nickel Alloys has built a strong reputation as a trusted manufacturer and supplier of high-performance metals. Our partnership with the Copper Nickel 7030 Tube Fittings Manufacturer in Canberra, Australia, is a perfect example of our global reach and commitment to quality. We provide the essential raw materials, ensuring that the finished fittings meet the rigorous demands of international marine and industrial projects, bridging Australian expertise with Middle Eastern manufacturing excellence.
The composition of Copper Nickel 7030, or cupronickel, is a carefully balanced blend of approximately 70% copper and 30% nickel, with small additions of iron and manganese. This specific recipe gives the fittings their renowned resistance to corrosion, especially in aggressive saltwater environments. Mechanically, these fittings are tough and durable, offering excellent tensile strength and maintaining their integrity under high pressure, which is crucial for the safety and longevity of piping systems in demanding applications.
Specification : ASTM B366 / ASME SB366
Tube Size : 1/16”OD to 2”OD, 2mm OD to 50mm OD
Thread : NPT, BSP, BSPT, UNF, ISO, SAE etc.
Pressure Rating : 6000PSI for Nickel Alloy, 300/1000/3000PSI for Brass
Applicable Temperature : 150-400°C
Origin : Indian Origin, European Origin, Japanese Origin
Testing and Documents : Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, Destructive Test Report, Non Destructive Test Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports
Packing : Packed in Wooden Boxes, Bubble wraps, Steel Strips Bundled, or as per Customers Requests
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
| Cu-Ni 70/30 | 65.0 min | 1.0 max | .05 max | 29-33 | 0.4-1.0 | 1 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Cu-Ni 70/30 | 0.323 lb/in3 at 68 F | 2260 F | 50000 psi | 20000 psi | 30 % |
The uses for these robust fittings are extensive, particularly in the harsh conditions of the Arabian Gulf. They are indispensable aboard ships and offshore oil platforms for critical seawater systems like cooling, fire-fighting, and ballast lines. On land, they are essential in desalination plants, power generation facilities, and coastal industrial complexes, where their reliability prevents costly downtime and repairs. This makes them a cornerstone for infrastructure that must perform flawlessly in some of the world’s most challenging environments.
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Copper nickel 70/30 tube fittings are widely used in marine and offshore applications due to their resistance to unusual seawater corrosion and biofouling Important in marine water production for marine water pipes, cooling systems, heat exchangers and desalination water. In addition, these materials are used in power plants, especially in water coolers and condensers. Its durability and reliability also make it suitable for offshore oil and gas operations, where it contributes to long maintenance-free operations in harsh and salty environments Versatile applications ensures that they operate under harsh conditions.
