Copper Nickel (Cu-Ni)

Copper alloy

The standard for seawater piping. Resists biofouling and general corrosion in marine service, which is why it dominates offshore firewater and cooling systems.

Grades

Commonly supplied

90/10 (C70600), 70/30 (C71500)

UNS: C70600 · C71500

Characteristics

What it does well

Biofouling	Naturally resists marine growth
Seawater	Excellent resistance at moderate flow velocities
Velocity limits	90/10 suited to lower velocities, 70/30 for higher
Fabrication	Readily welded and brazed

Product forms

Supplied as

Pipes & Tubes Flanges Buttweld Fittings Forged Fittings

Typical applications

Where it is used

Seawater cooling

Firewater systems

Shipbuilding

Desalination

Technical data

Composition and properties

Typical values for reference. Confirm the actual heat against the mill certificate supplied with your order.

Request for quotation

Copper Nickel (Cu-Ni)

Send it in any format, Excel, PDF, or a photo of a marked-up drawing. You get a technical response within one working day, not a brochure.