Monel
Stellanox Steel is a leading supplier of Monel alloys, known for their exceptional resistance to seawater, acids, and alkaline media. With high strength and outstanding durability, Monel products are ideal for marine engineering, chemical processing, oil and gas, and aerospace applications.
We offer Monel in various grades such as Monel 400 and Monel K500, available in sheets, plates, pipes, tubes, rods, bars, fittings, and fasteners—manufactured to international standards and certified for critical applications.
What are Monel Alloys?
| Products |
|---|
|
Stainless Steel |
|
Carbon Steel |
|
Duplex Stainless Steel |
|
Super Duplex Stainless Steel |
|
Alloy Steel |
|
Titanium |
|
Hastelloy |
|
Inconel |
|
Monel |
|
Aluminium |
|
Copper |
|
Pure Nickel |
|
Flanges |
|
Forged Fittings |
|
Valves |
|
Fasteners |
Monel Products
- Monel Sheet
- Monel Tube
- Monel Pipe Fittings
- Monel Forged Fittings
- Monel Round Bar
Key Features
Outstanding Resistance to Seawater, Acids & Alkalis
High Strength and Ductility
Excellent Thermal Conductivity
Non-Magnetic in Annealed Condition
Works in Cryogenic to High-Temperature Conditions
Available in Multiple Grades & Product Forms
Specification
| Property | Details |
|---|---|
| Product Forms | Sheets, Plates, Bars, Tubes, Pipes, Forgings, Fittings, Fasteners |
| Grades Available | Monel 400, Monel K500 |
| Manufacturing Standards | ASTM B127, B164, B165, B366, B564, B622, ASME SB Series |
| Melting Range | 1300°C – 1350°C |
| Density | ~8.8 g/cm³ |
| Heat Treatment | Annealed, Cold Worked, Precipitation Hardened |
| Testing & Certification | EN 10204 3.1/3.2, NACE MR0175, ASTM, ASME, DIN, ISO Approved |
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 |
| Sulfur (S) | ≤ 0.024 |
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 | Equivalent Grade |
|---|---|
| ASTM | B127, B164, B165 |
| UNS | N04400, N05500 |
| DIN / EN | 2.4360, 2.4375 |
| ISO | NiCu30Fe |
Weight
| Grade | Common Name | Unit (Form/Size) | Approx. Weight |
|---|---|---|---|
| UNS N04400 | Monel 400 | Sheet 3 mm (kg/m²) | 26.40 kg |
| UNS N05500 | Monel K500 | Round Bar Ø40 mm (kg/m) | 10.98 kg |
| ASTM B127 | Plate (Monel 400) | Plate 6 mm (kg/m²) | 52.80 kg |
| ASTM B165 | Seamless Pipe | Pipe OD 50.8 mm, WT 3 mm (kg/m) | 3.06 kg |
| ASTM B775 | Welded Pipe | Pipe OD 76.2 mm, WT 3.5 mm (kg/m) | 5.20 kg |
| ASTM B564 | Forged Fittings | Elbow 2" (avg. wt) | 0.55 kg |
Applications
Marine Systems: Propeller shafts, seawater valves, condenser tubing
Chemical Processing: Heat exchangers, reactors, acid storage
Oil & Gas: Downhole tools, separators, sour gas applications
Aerospace: Fuel tanks, turbine engine components, hydraulic lines
Nuclear Plants: Cooling lines, heat transfer systems
Hydrocarbon Processing: Alkylation units, de-ethanizers, distillation columns
Benefits
Unmatched Resistance to Seawater and Brine
Performs in Hydrofluoric, Sulfuric, and Hydrochloric Acid
Suitable for Cryogenic and High-Temperature Use
Work-Hardenable and Weldable
Extremely Long Service Life with Low Maintenance
Globally Certified for Critical Use Environments
2025 Stellanox Steel |