ASTM B127 UNS N04400 Sheet
1. Standard: ASTM B127, ASME SB127
2. Width: 0~2500mm or as per your requirements
3. Length: 0~12m or as per your requirements
4. Thickness: 0.1~ 50mm or as per your requirements
5. Grades:Monel 400,alloy 400,UNS N04400, en 2.4360
ASTM B127 UNS N04400 Sheet is a binary alloy containing approximately two-thirds nickel and one-third copper. The precise balancing of these two primary elements, along with minor additions of iron and manganese, produces its signature combination of strength and reducing-acid resistance. HT PIPE is a asme sb127 alloy 400 plate supplier with 15+ export experience. Contact us for more information and quotes for free!
Product Forms
Bar & Rod
Plate & Sheet
Coil & Strip
Pipe & Tube
Fitting: Flange, Tee, Elbow, Reducer etc.
Forging: Ring, Shaft, Circle, Block etc.
Monel 400 Plate Specifications
| Specifications | ASTM B127 / ASME SB 127 |
| Size | 1000 mm x 2000 mm, 1220 mm x 2440 mm, 1500 mm x 3000 mm, 2000 mm x 2000 mm, 2000 mm x 4000 mm |
| Thickness | 0.1mm to 50 mm Thickness |
| Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Strip, Flats, Blank (Circle), Ring (Flange) |
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard, etc. |
ASTM SB127 N04400 Monel Plate Composition
| Element | Weight % (ASTM B127 Limits) |
| Nickel (Ni) + Cobalt (Co) | 63.0% Minimum |
| Copper (Cu) | 28.0% to 34.0% |
| Iron (Fe) | 2.5% Maximum |
| Manganese (Mn) | 2.0% Maximum |
| Silicon (Si) | 0.5% Maximum |
| Carbon (C) | 0.3% Maximum |
| Sulfur (S) | 0.024% Maximum |
Standard Mechanical Properties
The mechanical capabilities of Monel 400 plate are highly dependent on its supply temper. While cold working increases its tensile strength, the standard annealed state maximizes ductility and ease of fabrication.
Annealed Plate:
Tensile Strength (Minimum): 70 ksi (485 MPa)
Yield Strength at 0.2% Offset (Minimum): 28 ksi (195 MPa)
Elongation in 2 inches (Minimum): 35%
As-Rolled (AR) Plate:
Tensile Strength (Minimum): 75 ksi (515 MPa)
Yield Strength at 0.2% Offset (Minimum): 40 ksi (275 MPa)
Elongation in 2 inches (Minimum): 25%
Key Performance Advantages
Resistance to Hydrofluoric and Sulfuric Acids
Monel 400 exhibits outstanding resistance to hydrofluoric acid (HF) across all concentrations up to the boiling point. This rare property makes it the premier material of choice for HF alkylation units in petroleum refining. Additionally, it withstands sulfuric and hydrochloric acids under moderately
reducing (de-aerated) conditions.
Marine and Brackish Water Superiority
The alloy's low corrosion rate in high-velocity seawater is well-documented. It resists cavitation, impingement, and erosion in turbulent marine zones. However, in completely stagnant saltwater, it can experience minor pitting or crevice corrosion, which engineers must mitigate during system design.
Resistance to Stress Corrosion Cracking (SCC)
Unlike conventional austenitic stainless steels, which are highly susceptible to chloride-induced SCC in hot, saline processes, Monel 400 is virtually immune to this failure mechanism in most fresh and industrial waters.
Sub-Zero Structural Integrity
Many ferrous metals undergo a sharp ductile-to-brittle transition when exposed to freezing or cryogenic temperatures. Monel 400 retains exceptional mechanical toughness, impact resistance, and tensile properties down to the temperature of liquid hydrogen without any embrittlement.
Key Industrial Applications
The unique properties of Monel 400 plate make it a vital component in several major sectors:
Chemical & Hydrocarbon Processing: Used in the fabrication of process vessels, heat exchangers, distillation columns, and piping components handling chlorinated solvents, alkalis, and strong reducing acids.
Marine Engineering & Shipbuilding: Widely utilized for offshore splash zone sheathing, valve trims, submarine hull penetrations, propeller shaft sleeves, and seawater desalination plants.
Power Generation: Employed in nuclear fuel isotope separation facilities, boiler feedwater heaters, and high-temperature steam generator tubing.
Machining Considerations
Monel 400 work-hardens rapidly during cutting. To maintain dimensional accuracy and extend tool life, machinists should:
- Utilize rigid setups and heavy-duty, sharp cutting tools (carbide is highly recommended).
- Maintain positive, continuous feed rates to avoid glazing or riding on the work-hardened surface.
- Employ sulfur-free cutting fluids, as sulfur can lead to material embrittlement during subsequent hot working or welding stages.
Welding and Joining
Monel 400 plate displays good weldability using standard processes like Gas Tungsten Arc Welding (GTAW/TIG) and Gas Metal Arc Welding (GMAW/MIG).
Preheating: Preheating is generally not required for standard plate thicknesses.
Cleaning: The joint area must be thoroughly cleaned of any oxides, paint, lubricants, or low-melting-point contaminants to prevent hot cracking.
Filler Metals: ERNiCu-7 bare wire or ENiCu-7 coated electrodes are typically matched to ensure the weld zone maintains equivalent corrosion resistance and strength.
FAQ
Q: About ASTM B127 UNS N04400 Sheet price per kg?
A: Prices ranges from $25 to $40 per kg, vary depending on size, wall thickness, supplier etc.
Q: How long does your delivery time take?
A: Delivery time is within 5-21 days
Q: Is There Sample Service?
A: Samples Are Provided Free Of Charge
Q: What Is The Minimum Order Quantity?
A: No Minimum Order Quantity
Q: How to pack the products?
A: The inner layer has a waterproof paper outer layer and is fixed with a fumigation wooden pallet.
Q: Exported Countries
A: Brazil, South Africa, Indonesia, India, Singapore, Malaysia, Iran, Russia, UAE, Chile, Laos, etc
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