Monel Alloy Supplier
Gnee’s Monel alloys deliver superior performance in extreme environments, offering outstanding resistance to corrosion, seawater, and acids. Ideal for marine, chemical, and oil & gas industries, our Monel products are available in various forms, including bars, pipes, and sheets, tailored to your specifications.
Monel Alloy in stock
With over a decade of expertise, Gnee ensures high-quality materials and competitive pricing. Contact us now for a custom quote and technical support!
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More information about our Monel
Abtou Gnee Monel
Monel Alloy is a nickel-copper alloy renowned for its exceptional resistance to corrosion, particularly in marine and chemical environments. With a nickel content of approximately 63% and copper around 28-34%, Monel combines the strength of nickel with the corrosion resistance of copper, making it ideal for harsh conditions.
Its variants, such as Monel 400 and Monel K500, cater to specific needs—Monel 400 excels in seawater applications like pump shafts and marine fixtures, while Monel K500 offers increased strength and hardness due to aluminum and titanium additions, making it suitable for high-stress components like oil well tools.
Operating efficiently in temperatures up to 500°C and maintaining mechanical integrity under acidic and alkaline conditions, Monel Alloy stands out in industries like chemical processing, aerospace, and marine engineering.
What ASTM standards of Monel can Gnee produce?
| ASTM Standard | Product Form |
| ASTM B127 | Plate, Sheet, Strip |
| ASTM B164 | Bar, Rod |
| ASTM B165 | Seamless Pipe, Tube |
| ASTM B564 | Forgings |
| ASTM B622 | Seamless Tube, Pipe |
| ASTM B366 | Wrought Fittings |
| ASTM B725 | Welded Pipe |
| ASTM B730 | Welded Tube |
rich grades of Monel in stock
| Grade | UNS |
| Monel 400 | N04400 |
| Monel 401 | N04401 |
| Monel 404 | N04404 |
| Monel R-405 | N04405 |
| Monel K-500 | N05500 |
Chemical Parameters
| Element | Monel 400 (%) | Monel K500 (%) |
| Nickel (Ni) | 63.0 min | 63.0 min |
| Copper (Cu) | 28.0-34.0 | 27.0-33.0 |
| Iron (Fe) | 2.5 max | 2.0 max |
| Manganese (Mn) | 2.0 max | 1.5 max |
| Silicon (Si) | 0.5 max | 0.5 max |
| Carbon (C) | 0.3 max | 0.25 max |
| Sulfur (S) | 0.024 max | 0.01 max |
| Aluminum (Al) | – | 2.3-3.15 |
| Titanium (Ti) | – | 0.35-0.85 |
Mechanical Properties
| Property | Monel 400 | Monel K500 |
| Tensile Strength (MPa) | 480-620 | 965-1100 |
| Yield Strength (MPa) | 170-345 | 690 min |
| Elongation (%) | 35-40 | 20-25 |
| Hardness (HRB) | 65-75 | 85-95 |
| Impact Strength (J) | High | Moderate |
Physical Property
| Property | Monel 400 | Monel K500 |
| Density (g/cm³) | 8.8 | 8.44 |
| Melting Range (°C) | 1300-1350 | 1350-1390 |
| Thermal Conductivity (W/m·K) | 21.8 | 17.5 |
| Electrical Resistivity (µΩ·cm) | 51.7 | 57 |
| Coefficient of Expansion (µm/m·K) | 13.9 | 14.4 |
| Magnetic Permeability (µ) | Non-Magnetic | Non-Magnetic |
Exceptional Corrosion Resistance: Outstanding resistance to a wide range of corrosive environments, including seawater, hydrofluoric acid, and alkalis. Monel 400 exhibits superior performance in marine and chemical processing applications.
High Strength and Durability: Monel K500 combines the corrosion resistance of Monel 400 with added strength and hardness due to precipitation-hardening treatment, achieving tensile strength up to 1100 MPa.
Wide Temperature Range: Monel alloys maintain mechanical integrity across temperatures from cryogenic conditions to 600°C, making them suitable for extreme environments such as heat exchangers and cryogenic storage tanks.
Excellent Weldability and Machinability: Monel alloys are easily fabricated and welded, allowing customization for complex industrial applications like pump shafts and propellers.
Resistance to Stress-Corrosion Cracking: Monel alloys perform exceptionally well in high-stress, corrosive environments where other materials may fail, such as in sour gas or brine environments.
Non-Magnetic Properties: Non-magnetic nature of Monel alloys is critical in applications like oil exploration and electronic instrumentation where magnetic interference must be minimized.
Why Choose Gnee?
Gnee maintains a rich inventory of high-performance nickel alloys, including Inconel, Incoloy, Hastelloy, Monel, and Stainless Steel Alloy grades. Our extensive stock ensures that we can meet the immediate needs of our customers, offering a wide range of sizes, forms, and specifications, from plates and bars to tubes and fittings. With quick access to critical materials, we minimize lead times and provide fast, reliable solutions
Nickel Alloy Inventory

Inconel Alloy 
Monel Alloy 
Hastelloy Alloy 
Nickel 
Nimonic Alloy 
Stainless Steel Alloy
Our export packaging complies with international standards for shipping and handling, ensuring the safe delivery of nickel alloys to various countries.
Common packaging methods
- Pallet packaging: Plates and sheets are usually placed on pallets for added stability
- Bundle packaging: Rods and tubes are often bundled together and secured with steel straps or high-strength straps
- Crate packaging: Wooden crates offer good protection and stability
- Foam protection packaging: Small accessories are often individually wrapped with foam
- Reel packaging: Wire is usually rolled into a round reel and wrapped with anti-corrosion material
In addition, if you have special requirements for packaging methods, we provide customized services to meet your personalized needs. Whether it is additional protection measures or special packaging materials, we can adjust according to your specific requirements. Our goal is to ensure that your goods arrive at their destination safely and intact.
Special customized packaging
- Size customization: Design special brackets or reinforcement materials for extra-long steel and special-shaped steel.
- Environmentally friendly packaging: Use degradable or recyclable packaging materials to meet customers’ green environmental protection requirements.
- Brand logo: Provide customers with packaging with company logos or special marks to facilitate brand identification and logistics management.
- Special protection: Such as adding shock-proof cushions or built-in pressure-resistant brackets for packaging of precision steel or high value-added products.
Gnee steel products have been exported to many countries and regions, including:
- Asia: Such as Japan, India, South Korea, Singapore, Malaysia, Thailand
- Middle East: Such as United Arab Emirates, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain
- Africa: Such as South Africa, Egypt, Nigeria, Kenya, Algeria, Morocco
- America: Such as Canada, Mexico, Brazil, Argentina, Chile
- Europe: Such as Germany, United Kingdom, France, Italy, Spain, Russia, Poland
No matter where the customer is located, Gnee can respond quickly with a complete logistics network.
We ensure the quality and performance of our nickel alloy products through the following testing services:
- Chemical Composition Analysis
- Mechanical Properties Testing
- Hardness Testing
- Non-Destructive Testing (NDT)
- Dimensional Inspection
- Visual Surface Inspection
- Corrosion Resistance Evaluation
- Test Report
We understand that every project has unique requirements. To support our customers, we offer a range of practical and efficient processing services for nickel alloy products, including:
- Cutting Services: such as laser cutting, plasma cutting or water jet cutting, etc.
- Sheet Metal Processing: such as stamping, bending, shearing
- Welding Services: such as TIG welding, MIG welding, electron beam welding, etc.
- Surface Treatment: such as polishing, electroplating, sandblasting, etc.
- Heat Treatment: including annealing, quenching, tempering, etc.
- Customized Processing: According to the specific needs of customers, we provide customized nickel alloy processing services, including customization in shape, size, thickness, etc.




















































