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).
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
|---|---|---|---|---|---|---|---|
| Monel 400 | 2.4360 | N04400 | NW 4400 | NA 13 | МНЖМц 28-2,5-1,5 | NU-30M | NiCu30Fe |
1.Chemical & Mechanical Properties
| ASME SB163 MONEL 400 Chemical Composition (%) | ||||||
|
C |
Mn |
Si |
S |
Cu |
Fe |
Ni |
| ≤0.30% | ≤2.00% | ≤0.50% | ≤0.24% | 28.0%-34.0% | ≤2.50% | ≥63.00% |
Mechanical Properties
| Condition |
Tensile Strength min, ksi (MPa) |
Yield Strength(0.2 % Offset) min, ksi (MPa) |
Elongation in 2 in.or 50 mm (or 4 D)min, % | Rockwell Hardness |
| Annealed | 70(483) | 28(193) | 35 | ... |
| Stress-relieved | 85(586) | 55(379) | 15 |
B75max |
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.
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