Products Description
Product Specifications
| Standards | ASTM B163 / ASME SB163 |
| Steel Grades |
Monel 400(UNS N04400) |
| Equivalent Materials | EN NiCu30Fe (2.4360 / 2.4361), JIS NW 4400 |
| Outer Diameter (OD) | 5mm-420mm |
| Wall Thickness (WT) | 0.5mm-55mm |
| Length | 6/12 m, or customized |
| Surface Treatment | Annealed, Pickled, Polished |
| Production Process | Cold Drawn / Cold Rolled |
| Condition | Soft Annealed / Bright Annealed |
Monel 400 (UNS N04400) is a wrought nickel-copper-based alloy characterized by excellent resistance to corrosion in seawater and various chemical environments, as well as strong resistance to chloride stress corrosion cracking. Due to its high nickel content, the Monel 400 alloy is capable of withstanding corrosion in anhydrous ammonia and ammoniated environments at temperatures below 585°C.
Monel 400 alloy (UNS N04400, 2.4360) is a single-phase solid-solution Ni-Cu alloy-primarily nickel-based-that demonstrates resistance to a wide range of corrosive environments and possesses good ductility.
Monel 400 alloy can be welded using various processes, including Gas Tungsten Arc Welding (GTAW), Gas Metal Arc Welding (GMAW), and shielded Gas Metal Arc Welding methods.
Customized Services
- TORICH offers a one-stop customized processing service, from dimensions, surface treatment, heat treatment processes, to packaging, which can be customized according to project requirements.
- We offer forming processes such as bending, flaring, necking, flanging, chamfering, and deburring, as well as precision machining services such as turning, drilling, grooving, and end treatment.
Chemical Composition Test
Chemical Composition
| Element | Nickel (Ni) | Copper (Cu) | Iron (Fe) | Manganese (Mn) | Silicon (Si) | Carbon (C) | Sulfur (S) |
| Monel 400 | 63.0 min | 28.0–34.0 | 2.5 max | 2.0 max | 0.5 max | 0.3 max | 0.024 max |
Mechanical Properties
| Property | Metric | Imperial |
| Tensile Strength (min) | 480 MPa | 70 ksi |
| Yield Strength (0.2% offset, min) | 170 MPa | 25 ksi |
| Elongation (min) | 35% | 35% |
| Hardness (max) | 65 HRB | 65 HRB |
| Density | 8.8 g/cm³ | 0.318 lb/in³ |
| Melting Point | 1300–1350°C | 2370–2460°F |
Possible Alternative Grades
- For non-critical, mildly corrosive piping-such as auxiliary bilge lines on vessels or backup lines for small seawater lift pumps-316L stainless steel is a suitable choice, offering a cost savings of 40% to 50% compared to Monel 400.
- For medium-to-high-pressure piping on offshore platforms-such as general water transfer lines or cooling circuits in non-core areas-2205 duplex stainless steel is recommended, provided the seawater pressure does not exceed 10 MPa.
- For deep-sea environments and marine settings characterized by extreme corrosivity, titanium alloys are the preferred choice due to their superior corrosion resistance.
application areas
Monel 400 Tubes are primarily utilized in marine engineering applications such as condensers, heat exchangers, and critical fluid transport systems. Specific application areas include:
- Offshore Platforms/FPSOs: Main and auxiliary seawater cooling lines, condenser tube bundles, and evaporator piping.
- Marine Vessels: Ballast water systems, bilge piping, hydraulic oil lines, and marine condenser tubing.
- Seawater Desalination: Inlet and outlet piping for Reverse Osmosis (RO) units, flash evaporator lines, brine transport lines, and heat recovery system piping.
- Offshore Oil & Gas: Subsea pipelines (in shallow to moderate depths), subsea wellhead piping, and Christmas tree gathering lines.
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: Can it be used in hydrofluoric acid and hot alkali applications?
A: Yes, Monel 400 is one of the few alloy tubing options suitable for hydrofluoric acid, reducing acids, and hot concentrated alkalis.
Q: Can Monel 400 tubing be bent or machined?
A: Yes, our tubing undergoes precision cold drawing and solution annealing, providing excellent cold working properties for bending, flaring, welding, and machining.
Q: What level of dimensional tolerance can be achieved?
A: Our standard outer diameter tolerance is ±0.05mm, with uniform wall thickness within ±10%. Custom tolerances are available for precision applications.
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