Copper-Nickel (Cu-Ni) 90/10 Buttweld Fittings are a type of pipe fittings used in piping systems where copper-nickel alloy with a composition of 90% copper and 10% nickel is required. These fittings are specifically designed to connect and join pipes, valves, and other components in pipelines or plumbing systems that handle fluids, especially seawater and other corrosive environments. The 90/10 composition of copper-nickel provides excellent resistance to corrosion, particularly in marine applications.
Table Of Content
Common types of Cu-Ni 90/10 buttweld fittings include:
Cupro-Nickel 90/10 Elbows: These fittings allow for changes in the direction of the piping system. They come in different angles, such as 90 degrees and 45 degrees, to facilitate smooth turns in the pipeline.
Copper-Nickel 90/10 Tees: Tees are used to split the flow of fluid into two different directions. They have a T-shaped design and are used in various piping configurations.
Cu-Ni 90/10 Reducers: Reducers are used to connect pipes of different sizes. They can be either concentric (maintaining a constant centerline) or eccentric (changing the centerline).
Cupro-Nickel 90/10 Caps: Caps are used to seal the end of a pipe, preventing the flow of fluid. They are commonly used as a termination point in a piping system.
Cu-Ni 90/10 Stub Ends: Stub ends are used in flange connections. They are typically used to make it easier to rotate a flange or other components in a piping system.
Copper Nickel 90/10 Buttweld Fittings are known for their durability and corrosion resistance, making them suitable for applications in the shipbuilding industry, offshore oil and gas platforms, and other environments where exposure to saltwater and other corrosive agents is a concern. These fittings are manufactured to meet industry standards and specifications to ensure their reliability and performance in demanding conditions.
ASTM B366 / ASME SB366
ANSI B16.9, B16.25, B16.28, MSS-SP-43, MSS-SP-48, MSS-SP-59
Seamless Butt Weld Fittings : 1/2″ – 10″ Welded Butt Weld Fittings : 1/2″ – 48″
Seamless / Welded / Fabricated
SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
from 2 to 40 mm
R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
90 Deg. Elbow, 45 Degree Elbow, LR/SR Elbow, Reducers, Tee, Cross, Bends 1.5d, 3d, 5d, 10d, U bend, 180 Deg Bend, Short / Long stubends, End Cap, Lap-joint Stub End
| STANDARD | UNS | WERKSTOFF NR. |
| Cupro Nickel 90/10 | C70600 | 2.0872 |
| Cu-Ni 90/10 | Cu | Pb | Mn | Fe | Zn | Ni |
| 88.6 min | 0.05 max | 1.0 max | 1.8 max | 1 max | 9-11 max |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.1 g/cm3 | 1443 °C (2430 °F) | Psi – 35,000, MPa – 241 | Psi -80,000, MPa -551 | 30 % |
Oil & Gas Industrires
Chemical Industries
Construction Industries
Offshore Pipelines & Pipe Works
Petrochemical Industry
Shipbuilding Industries
Hydraulic Applications
Piping Systems
Refining Industry
Food Processing Industry
Pulp & Paper Industry
Power Plant Industry
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