Monel 400 Seamless Pipe

Monel 400 Seamless Pipe is manufactured in accordance with ASTM B165, the standard specification for seamless nickel-copper alloy (UNS N04400) pipe. It offers excellent resistance to seawater and saltwater, good mechanical properties, and high ductility and toughness even at low temperatures. It is used in marine and offshore applications, chemical processing, aerospace, and other fields.
Outer Diameter: 5mm-280mm (customizable)
Wall Thickness: 0.5mm-55mm (customizable)
Length: Can be customized upon request
Steel Grade:Monel 400 (UNS N04400 / W.Nr. 2.4360, 2.4361)

Products Description

Our Advantages

Strong Corrosion Resistance: Monel 400 Seamless Pipe exhibits excellent resistance to seawater and saltwater corrosion. It offers exceptional resistance to flowing, still, and even high-velocity seawater, far surpassing that of ordinary stainless steel.
Strong Machinability: Compared to many other high-performance nickel-based or specialty alloys, Monel 400 is easier to form, cut, and join, allowing for custom fabrication of heat exchangers, manifolds, and process piping.
Seamless Construction: Compared to welded pipe, Monel 400 seamless pipe offers superior pressure-bearing capacity and a uniform, flawless finish, making it suitable for critical applications involving high pressure, high risk, and high corrosion.

application areas

Marine and Offshore: Seawater piping, heat exchangers, pump shafts
Chemical Processing: Hydrofluoric acid services, alkali production, chlorinated solvents
Oil and Gas: Sour gas services, offshore platform piping, valves, and fittings
Aerospace: Fuel tanks exposed to salt environments, hydraulic lines
Power Generation: Condenser tubes, feedwater heaters

Chemical Composition

Element	Ni	Cu	Fe (max)	Mn (max)	C (max)	Si (max)	S (max)
Monel 400	≥63.0	28–34	2.5	2.0	0.30	0.50	0.024

Mechanical Properties

Property	Tensile Strength (MPa)	Yield Strength 0.2 (MPa)	Elongation (%)	Hardness (HRB)
Monel 400	≥ 550	≥ 240	≥ 30	≤ 110

Possible Alternative Grades

Monel K-500 (UNS N05500): A higher-strength, age-hardened version of Monel 400.
Inconel 625 (UNS N06625): Improved high-temperature strength and oxidation resistance.
Hastelloy C-276 (UNS N10276): Excellent resistance to strong oxidants.
254 SMO / 6Mo Stainless Steel: A cost-effective alternative for seawater applications where nickel alloying is not mandatory.

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Products Application

steeltube-applications

Products Package

stainless steel pipe package.jpg

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