90/10 CuNi Alloy UNS C7060X Weld Neck Flanges RF 150#

90/10 CuNi Alloy UNS C7060X Weld Neck Flange – RF 150# – EEMUA 145 / ASME B16.5 – SSM

SSM supplies high-quality 90/10 Copper-Nickel (CuNi) alloy weld neck flanges, manufactured to EEMUA 145 and ASME B16.5 standards. With a 150# RF (Raised Face) rating, these flanges are ideal for corrosion-resistant, seawater, and marine piping applications.

Material Composition of 90/10 CuNi (UNS C7060X)

The 90/10 Copper-Nickel alloy consists of:

Copper (Cu): 90%

Nickel (Ni): 10%

Iron (Fe): 0.3–1.0%

Manganese (Mn): 0.5–1.0%

Residuals: ≤0.5%

This composition provides excellent corrosion resistance in seawater and chloride-rich environments.

Mechanical Properties

Tensile Strength: 370–550 MPa

Yield Strength: ≥150 MPa

Elongation: 30–45%

Hardness: 80–120 HB

Operating Temperature: -196°C to +150°C

What is a 90/10 CuNi WN RF Flange?

A weld neck flange (WN) is designed with a tapered hub welded directly to the pipe, ensuring:

Even stress distribution along the hub and pipe

Reliable sealing in high-pressure and corrosive pipelines

Compatibility with gaskets on raised face (RF) surfaces

90/10 CuNi flanges are commonly used in marine, seawater cooling, and offshore applications due to their resistance to corrosion, erosion, and biofouling.

Advantages

Excellent seawater corrosion resistance – ideal for offshore pipelines

Good mechanical strength – withstands moderate pressure applications

High ductility – suitable for welding and forming

Biofouling resistance – reduces marine growth on surfaces

Limitations / Considerations

Higher cost compared to standard carbon steel flanges

Not suitable for extremely high-temperature applications (>150°C)

Requires careful welding to maintain corrosion resistance

Material and Specifications

Material: 90/10 CuNi Alloy UNS C7060X

Type: Weld Neck (WN), Raised Face (RF)

Pressure Class: 150#

Standards: EEMUA 145, ASME B16.5

Size Range: DN15 – DN600 (½" – 24")

Applications

SSM's 90/10 CuNi WN RF flanges are widely used in:

Marine and offshore pipelines

Seawater cooling and desalination systems

Petrochemical and chemical plants near coastal areas

Shipbuilding and offshore oil platforms

Why Choose SSM?

Over 30 years of experience in CuNi alloy flange manufacturing

Advanced forging, CNC machining, and quality testing

ISO, PED, and TS certified for quality assurance

Custom sizes, pressure ratings, and finishes available

Fast global delivery and competitive pricing

Conclusion

For 90/10 CuNi Alloy UNS C7060X weld neck flanges RF 150#, SSM provides durable, corrosion-resistant, and high-quality flange solutions for demanding marine, offshore, and industrial applications.

📩 Contact SSM today for quotations, technical drawings, or custom flange solutions.

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