Copper Nickel Flanges

Source Copper Nickel Flanges from verified mills, manufacturers and stockists on MetalMitra. Options span all standard face types and pressure classes, produced to ASTM / ASME SB 61 / 62 / 151 / 152, and every order can ship with an EN 10204 3.1 certificate.

Copper Nickel Flanges are forged or machined components used to connect pipes, valves, pumps and equipment, allowing easy assembly, inspection and maintenance of piping systems.

Copper nickel (Cu-Ni) alloys such as 90/10 and 70/30 offer excellent resistance to seawater corrosion and biofouling, combined with good thermal conductivity and fabricability.

What you can source

• Weld Neck Flanges — Butt-welded flanges for high-pressure and high-temperature service.
• Slip On Flanges — Slip over the pipe for easy alignment and welding.
• Blind Flanges — Solid flanges used to close pipe ends and openings.
• Socket Weld & Threaded Flanges — Compact connections for smaller bore piping.
• Lap Joint Flanges — Used with stub ends for easy alignment.
• Spectacle & RTJ Flanges — Positive isolation and high-pressure sealing.

Key properties

• Seawater Corrosion Resistance — Excellent performance in seawater and marine environments.
• Biofouling Resistance — Natural resistance to marine biofouling.
• Thermal Conductivity — Good heat-transfer properties for exchangers and condensers.
• Easy Fabrication — Good formability and weldability.

Applications & industries

• Marine Engineering
• Shipbuilding
• Desalination
• Offshore Platforms
• Heat Exchangers
• Condensers
• Seawater Piping
• Power Generation
• Oil & Gas
• Fire Fighting Systems
• Fabrication
• General Engineering

Testing & documentation

Inspection and documentation for Copper Nickel Flanges follow the applicable standard plus any extra requirements in your PO.

• Dimensional inspection
• Visual and surface inspection
• Grade verification against the order
• Chemical composition verification
• Mechanical testing as applicable
• Flange face and bolt-hole inspection
• Non-destructive testing as applicable
• EN 10204 3.1 Mill Test Certificate
• Third-party inspection (TPI) on request

Chemical & mechanical properties

Chemical composition and mechanical properties are supplied to the limits of the governing material standard. Actual heat values are reported on the mill test certificate shared with each consignment.

Why source on MetalMitra

• Checked sellers only — Every supplier profile is screened by MetalMitra before it goes live.
• Faster sourcing — Post one requirement and receive competitive offers without chasing calls.
• Paperwork sorted — MTC 3.1, test reports and TPI arranged as your project demands.
• Global logistics — Seaworthy packing and dispatch to project sites across the world.

Request pricing

Post an RFQ for Copper Nickel Flanges with your drawing or specification and receive quotes from verified suppliers.

Technical note: Figures shown are indicative. Final acceptance should be based on the applicable standard, approved drawings and the MTC supplied with the material.