Monel 411 Alloy | High-Strength Nickel-Copper Alloy Manufacturer & Supplier
Supplied by Huaxiao-Alloy – Your Trusted Global Alloy Partner
1. Product Overview
Monel 411 Alloy is a high-strength nickel-copper alloy engineered for superior corrosion resistance, outstanding mechanical performance, and reliable operation in both industrial and high-temperature applications. Monel 411 is part of the Monel family with enhanced tensile and yield strength compared to Monel 400 and 404, while maintaining excellent resistance to seawater, acids, and alkalis.
At Huaxiao-Alloy, Monel 411 is supplied in all standard forms — pipes, tubes, sheets, plates, bars, wires, and custom fittings — manufactured to ASTM B164/B865, UNS N04411, and DIN equivalents. Our products are precision-engineered for long-term durability, tight dimensional tolerances, and export-ready quality.
Monel 411 is widely used in marine engineering, chemical processing, oil & gas, high-temperature systems, and electrical applications where both corrosion resistance and high strength are required.
2. Chemical Composition (Typical %)
| Element | Nickel (Ni) | Copper (Cu) | Iron (Fe) | Manganese (Mn) | Carbon (C) | Silicon (Si) | Sulfur (S) |
|---|---|---|---|---|---|---|---|
| Content (%) | 63 min | 28–34 | 2.5 max | 2.0 max | 0.15 max | 0.5 max | 0.02 max |
Notes:
High nickel ensures excellent corrosion resistance.
Copper provides resistance to seawater and non-oxidizing acids.
Minor elements improve mechanical properties, machinability, and thermal stability.
3. Mechanical Properties
| Property | Condition | Typical Value |
|---|---|---|
| Tensile Strength | Annealed | 700–880 MPa (102–128 ksi) |
| Yield Strength (0.2% offset) | Annealed | 380–500 MPa (55–73 ksi) |
| Elongation | 50 mm | 25–35% |
| Hardness | Brinell | 160–195 HB |
| Density | — | 8.83 g/cm³ |
| Melting Point | — | 1300–1350°C |
Monel 411 exhibits superior strength and toughness for high-pressure, high-temperature, and structural applications, while maintaining corrosion resistance.
4. Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | N04411 |
| ASTM / ASME | B164, B865 |
| DIN | 2.4376 |
| ISO | NiCu30Fe |
| JIS | NW4411 |
| BS | NA 13 |
5. Key Features & Benefits
High Strength – Suitable for high-pressure pumps, valves, and structural components.
Outstanding Corrosion Resistance – Performs well in seawater, brine, acids, and alkalis.
Heat and Oxidation Resistance – Stable properties up to 500–600°C.
Electrical Performance – Suitable for resistors, connectors, and control elements.
Good Fabrication & Weldability – Machinable, weldable, and formable using standard Monel filler metals.
Non-Magnetic – Maintains non-magnetic behavior at all temperatures.
Versatile Applications – Marine, chemical, oil & gas, high-temperature, and electrical systems.
Durable & Long-Lasting – Resistant to stress corrosion cracking, cavitation, and erosion.
6. Available Product Forms
| Product Form | Size Range | Remarks |
|---|---|---|
| Pipe & Tube | OD 6–219 mm, WT 0.5–12 mm | Seamless or welded, ASTM B865 |
| Sheet & Plate | 0.5–50 mm | Hot/cold rolled, pickled or polished |
| Bar & Rod | 3–200 mm | Round, square, hex |
| Wire | 0.1–10 mm | Coil or spool, bright annealed |
| Coil / Strip | 10–1200 mm width | Precision rolled finish |
| Fittings & Flanges | Custom sizes | Forged or machined |
All Monel 411 products are ISO and export-compliant, with mill certificates and protective packaging.
7. Typical Applications
Marine & Offshore:
Pump shafts, impellers, and valves
Heat exchanger and condenser tubing
Seawater piping systems
Chemical Processing:
Reactors, tanks, and piping for acids and brines
Evaporators and chemical processing equipment
Oil & Gas:
Tubing, valves, and high-pressure fittings for offshore platforms
Pumps and heat-resistant components
High-Temperature / Electrical Applications:
Turbine components, boiler parts, and heat exchangers
Electrical resistors, connectors, and sensor housings
Components requiring corrosion resistance and stable electrical performance
8. Corrosion & Heat/Electrical Resistance
Monel 411 offers superior resistance to:
Seawater, brine, and chloride environments
Non-oxidizing acids (HCl, HF, H2SO4)
Alkaline solutions and brines
Stress corrosion cracking and erosion
Oxidation at elevated temperatures
Electrical resistivity makes it suitable for resistors, heating elements, and connectors in harsh environments.
9. Fabrication & Welding Guidelines
Forming: Cold or hot forming possible; intermediate annealing recommended for heavy deformation.
Machining: Alloy work-hardens; low cutting speeds, sharp tools, and coolant are recommended.
Welding:
Filler metals: Monel 60 or ENiCu-7
Methods: TIG, MIG, SMAW
Preheating: Not required; post-weld annealing optional
Heat Treatment: Annealing at 870°C (1600°F) restores ductility and corrosion resistance.
10. Quality Assurance & Certifications
Huaxiao-Alloy ensures Monel 411 meets international standards:
✅ ISO 9001:2015 certified production
✅ ASTM B164/B865, UNS N04411, DIN 2.4376 compliance
✅ PMI, hardness, tensile, and hydrostatic testing
✅ EN 10204 3.1 / 3.2 mill certificates
✅ Export-grade protective packaging
Our factories in Wuxi, Foshan, and Shanghai Baoshan guarantee precision dimensions, corrosion-free finishes, and global shipping readiness.
11. Why Choose Huaxiao-Alloy
Comprehensive Alloy Solutions: Monel, Inconel, Hastelloy, stainless steel
Factory-Direct Pricing: Cost-effective, ISO-certified, export-ready
Technical Expertise: Material selection, fabrication, and welding guidance
Global Supply Chain: Fast delivery to Europe, Middle East, and Asia
Certifications: ISO, SGS, BV, TUV, ABS, DNV
Huaxiao-Alloy is a trusted global supplier of Monel 411, providing both technical guidance and commercial support.
A: Marine, chemical, oil & gas, high-temperature, and electrical applications requiring high strength and corrosion resistance.
A: Monel 411 has slightly higher tensile strength and is optimized for high-pressure industrial and electrical applications.
A: Yes, using standard Monel filler metals with TIG, MIG, or SMAW methods.
A: ASTM B164/B865, UNS N04411, DIN 2.4376, ASME SB164/SB865.
A: No, it remains non-magnetic under all operating conditions.
A: Approximately 500–600°C depending on application.
A: Pickled, polished, bright-annealed, or brushed.
A: Yes, Huaxiao-Alloy provides cut-to-size, machined, or custom fittings.
A: Superior corrosion resistance in chloride environments, higher strength at elevated temperatures, and stable electrical properties.
Monel 411 Alloy | High-Strength Nickel-Copper Alloy Manufacturer & Supplier
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