Premium ASME SA182/SA240 UNS N10276 Marine Engineering Alloy Pipe Flanges

Premium ASME SA182/SA240 UNS N10276 Marine Engineering Alloy Pipe Flanges – SSM

SSM offers premium-quality UNS N10276 (Alloy 20) pipe flanges, manufactured according to ASME SA182 and SA240 standards, specifically designed for marine engineering, chemical, and high-corrosion industrial applications.

Material Composition of UNS N10276 (Alloy 20)

UNS N10276 is a nickel-iron-chromium alloy with molybdenum and copper additions for excellent corrosion resistance, especially against chlorides and oxidizing acids. Typical composition:

Nickel (Ni): 32–38%

Chromium (Cr): 19–21%

Iron (Fe): balance

Molybdenum (Mo): 2–3%

Copper (Cu): 2.5–4%

Carbon (C): ≤0.03%

Mechanical Properties

Tensile Strength: 620–860 MPa

Yield Strength: ≥310 MPa

Elongation: ≥40%

Hardness: ≤240 HB

Operating Temperature: -50°C to +315°C

What is a Marine Engineering Alloy Flange?

A marine engineering alloy pipe flange is designed for:

High-corrosion seawater and chemical environments

Marine and offshore piping systems

High-pressure and high-temperature pipelines

UNS N10276 flanges provide long-lasting performance in seawater, brackish water, and chemical processing plants, thanks to Alloy 20's superior resistance to chloride stress corrosion cracking (C-SCC).

Advantages

Excellent corrosion resistance – ideal for marine and chemical applications

High mechanical strength – withstands pressure and mechanical stress

Superior durability – long service life in harsh environments

Good weldability and machinability – easy to integrate into piping systems

Limitations / Considerations

Higher cost compared to standard stainless steel flanges

Not suitable for extremely high temperatures (>315°C)

Requires proper welding and fabrication to maintain corrosion resistance

Material and Specifications

Material: UNS N10276 (Alloy 20)

Standards: ASME SA182 / SA240

Type: Weld Neck, Slip-On, Blind, Socket Weld, or custom flange

Pressure Classes: ASME Class 150–2500

Size Range: NPS ½" – 48" (DN15 – DN1200)

Applications: Marine engineering, chemical processing, seawater pipelines

Applications

SSM's UNS N10276 marine alloy flanges are widely used in:

Offshore oil and gas platforms

Seawater cooling and desalination systems

Chemical and petrochemical plants

High-corrosion marine and industrial pipelines

Why Choose SSM?

Over 30 years of experience in alloy steel flange manufacturing

Advanced forging, CNC machining, and quality inspection

ISO, PED, and TS certified for quality assurance

Custom sizes, pressure ratings, and finishes available

Fast global delivery and competitive factory pricing

Conclusion

For premium ASME SA182/SA240 UNS N10276 marine engineering alloy pipe flanges, SSM provides high-quality, corrosion-resistant, and durable flange solutions for seawater, chemical, and offshore applications.

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

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