Monel Tube
Stellanox Steel offers a wide range of Monel Tubes, expertly engineered for applications requiring exceptional resistance to seawater, acids, and high temperatures. Crafted from high-performance nickel-copper alloys like Monel 400 and Monel K500, these tubes are ideal for demanding systems in marine, chemical, power generation, oil & gas, and nuclear sectors.
Available in seamless, welded, U-bend, and coiled forms, Monel tubes provide durability, corrosion resistance, and pressure-handling capacity for aggressive environments.
What are Monel Tubes?
Monel Tubes are hollow, cylindrical metal components made from corrosion-resistant nickel-copper alloys. Known for their exceptional toughness, saltwater resistance, and thermal stability, Monel tubes are widely used in heat exchangers, evaporators, condensers, and fluid transport systems where conventional stainless steel tubing fails.
Monel 400 offers excellent general corrosion resistance, while Monel K500 provides added strength through precipitation hardening.
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Stainless Steel |
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Carbon Steel |
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Duplex Stainless Steel |
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Super Duplex Stainless Steel |
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Alloy Steel |
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Titanium |
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Hastelloy |
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Inconel |
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Monel |
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Aluminium |
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Copper |
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Pure Nickel |
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Flanges |
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Forged Fittings |
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Valves |
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Fasteners |
Key Features
Outstanding Resistance to Seawater, Acids & Alkalis
Performs in Cryogenic and High-Temperature Conditions
Available in Seamless, Welded, U-Bend, and Coiled Forms
High Strength with Excellent Ductility and Toughness
Excellent Thermal Conductivity
Compliant with ASTM, ASME, DIN, and ISO Standards
Grades
- Monel 400 Tube
- Monel K500 Tube
Specification
| Property | Details |
|---|---|
| Product | Monel Tube |
| Grades Available | Monel 400, Monel K500 |
| Manufacturing Standards | ASTM B165 (400), B730 (K500), ASME SB165, DIN 2.4360 / 2.4375 |
| Tube Types | Seamless, Welded, U-Bend, Coiled |
| Outer Diameter Range | 6 mm to 101.6 mm (1/4" to 4") |
| Wall Thickness Range | 0.5 mm to 12 mm |
| Length Range | Up to 12 meters (custom cut available) |
| Surface Finish | Bright Annealed, Pickled, Polished, Cold Drawn |
| Testing & Certification | EN 10204 3.1/3.2, Hydrostatic, Eddy Current, Ultrasonic, NACE MR0175 |
Chemical Composition
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | ≥ 63.0 |
| Copper (Cu) | 28.0 – 34.0 |
| Iron (Fe) | 2.0 – 2.5 |
| Manganese (Mn) | ≤ 2.0 |
| Carbon (C) | ≤ 0.30 |
| Silicon (Si) | ≤ 0.50 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 550 MPa |
| Yield Strength | ≥ 170 MPa |
| Elongation | ≥ 35% |
| Hardness | ≤ 65 HRB |
| Density | ~8.80 g/cm³ |
Equivalent Grades
| Standard | Grade |
|---|---|
| ASTM | B165 (400) |
| UNS | N04400, N05500 |
| DIN / EN | 2.4360, 2.4375 |
| ISO | NiCu30Fe |
Weight
| OD (mm) | Wall Thickness (mm) | Weight per Meter (kg) | Weight per 3 m (kg) |
|---|---|---|---|
| 6.0 | 1.0 | 0.14 | 0.42 |
| 8.0 | 1.0 | 0.19 | 0.57 |
| 10.0 | 1.0 | 0.25 | 0.75 |
| 12.7 | 1.2 | 0.35 | 1.05 |
| 15.0 | 1.5 | 0.49 | 1.47 |
| 19.05 | 1.5 | 0.62 | 1.86 |
| 25.4 | 2.0 | 1.03 | 3.09 |
| 32.0 | 2.5 | 1.47 | 4.41 |
| 38.1 | 2.5 | 1.75 | 5.25 |
| 50.8 | 3.0 | 2.86 | 8.58 |
Applications
Marine Engineering: Seawater cooling systems, ballast systems, heat exchangers
Chemical Processing: Acid transport lines, evaporators, condenser tubes
Oil & Gas Industry: Downhole tubing, risers, flexible flowlines
Power & Nuclear Plants: Steam generation coils, reactor coolant systems
Pulp & Paper Plants: Alkali recovery boilers, digesters, bleach line tubing
Aerospace Systems: Fuel lines, hydraulic conduits, instrumentation tubing
Benefits
Corrosion-Immune in Saline, Acidic, and Alkali Environments
Long-Lasting Performance in High-Stress, High-Temperature Conditions
Excellent Weldability and Fabrication Versatility
Minimal Maintenance = Cost-Effective Lifespan
Trusted for Critical Fluid and Gas Transfer Applications
2025 Stellanox Steel |