Bright Surface ASME SB163 N04400 Nickel-Copper Alloy Heat Exchanger U Bend Tube

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Bright Surface ASME SB163 N04400 Nickel-Copper Alloy Heat Exchanger U Bend Tube

This product is a U-bend tube fabricated from N04400 nickel-copper alloy (Monel 400) as specified by the ASME SB163 standard, featuring a bright surface finish. Its defining characteristic is the cold-bending process that forms straight tubing into a precise U-shaped bend, while retaining the material's inherent excellent corrosion resistance and mechanical properties. It is designed for high-reliability and space-efficient heat exchange and fluid conveyance systems.

Material: N04400 (UNS N04400) Nickel-Copper Alloy, commonly known as Monel 400. It is a nickel (approx. 63-70%) and copper (approx. 28-34%) based, solid-solution strengthened alloy renowned for its exceptional resistance to a wide range of corrosive environments, including seawater, acidic, and alkaline solutions.

U-Bend Tube:Refers to straight tubing that has been formed (typically by cold bending) into a 180-degree U-shape with a specific bend radius (R). 

1.Chemical & Mechanical Properties

Mechanical Properties

Available Size Range

Outer Diameter (OD): Common range from 9.53mm (3/8") to 25.4mm (1"), other sizes available upon request.

Wall Thickness (WT): Common range from 0.8mm to 2.5mm (corresponding to different ODs).

U-Bend Radius (R): Customized according to customer design and tube bundle layout.

Straight Leg Length: Precisely cut as per customer drawings.

2. Key Advantages

• Corrosion Resistance: Monel 400 is highly resistant to corrosion in seawater and many acidic environments. This makes it ideal for applications in chemical processing, marine engineering, and oil and gas extraction.
• Mechanical Properties: The alloy maintains good mechanical properties at both elevated and sub-zero temperatures, making it suitable for a variety of temperatures in applications.
• Weldability: Monel 400 can be welded using most standard processes, although proper techniques should be employed to prevent cracking.
• Non-Magnetic: Monel 400 is non-magnetic, making it useful in applications where magnetic permeability is a concern.

3. Key Applications

• Marine engineering.
  Chemical and hydrocarbon processing equipment.
  Gasoline and freshwater tanks.
  Crude petroleum stills.
  De-aerating heaters.
  Boiler feed water heaters and other heat exchangers.
  Valves, pumps, shafts, fittings, and fasteners.
  Industrial heat exchangers.
  Chlorinated solvents.
  Crude oil distillation towers.