ASTM B127 Monel 400 Plates Stockist | ISO 9001:2015 | EN 10204 3.1 MTC | NABL Laboratory Testing
Vivid Steel & Engineering supplies Monel 400 Plates and Sheets, UNS N04400, for demanding applications across chemical processing, marine engineering, oil & gas, petrochemical, power generation and other industrial sectors. Monel 400 is designated UNS N04400 and is also identified by Werkstoff No. 2.4360 / 2.4361. The alloy contains a minimum of approximately 63% nickel with copper as the principal alloying element. It is particularly recognized for resistance to seawater, hydrofluoric acid, alkaline solutions and several chemical-processing environments. Monel 400 Plates & Sheets are nickel-copper alloy products known for their excellent resistance to seawater, marine environments, hydrofluoric acid and a range of corrosive media, along with good mechanical properties over a broad temperature range. MONEL Alloy 400 is used in marine engineering, chemical processing, hydrocarbon processing, valves, pumps, shafts, fittings and heat exchangers.
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Monel 400 Plates & Sheets Overview & Key Features
Monel 400 Plate is a heavy-gauge flat-rolled nickel-copper alloy product used for fabricating components exposed to corrosive environments and demanding mechanical service.
Monel 400 Sheet is the thinner flat-product form, commonly selected for fabricated equipment, chemical-processing components, marine applications and corrosion-resistant assemblies.
Monel 400 is a single-phase nickel-copper alloy whose properties are primarily obtained through solid-solution strengthening rather than precipitation hardening. It combines corrosion resistance with useful mechanical strength and toughness.
| Element | Composition, % |
| Nickel (Ni) | 63.0 min |
| Copper (Cu) | 28.0–34.0 |
| Iron (Fe) | 2.5 max |
| Manganese (Mn) | 2.0 max |
| Carbon (C) | 0.30 max |
| Silicon (Si) | 0.50 max |
| Sulfur (S) | 0.024 max |
| Cobalt (Co) | Included with applicable limits |
| Mechanical Property | Approx. Value |
| Tensile Strength | ~550 MPa |
| Yield Strength, 0.2% Offset | ~240 MPa |
| Elongation | ~40% |
| Material Condition | Annealed |
| Strengthening | Solid Solution / Cold Work |
| Physical Property | Approximate Value |
| Density | 8.80 g/cm³ |
| Density | ~8800 kg/m³ |
| Melting Point | ~1300–1350°C |
| Specific Heat | ~427 J/kg·°C |
| Thermal Conductivity | ~21.8 W/m·K |
| Electrical Resistivity | ~0.547 µΩ·m |
| Thermal Expansion | ~13.9 × 10⁻⁶/K |
| Standard | Applicable Monel 400 Reference |
| ASTM | ASTM B127 |
| ASME | SB-127 |
| UNS | N04400 |
| Werkstoff | 2.4360 / 2.4361 |
| BS | BS 3072 NA13 |
| DIN | DIN 17750 |
| SAE | AMS 4544 |
| Federal Specification | QQ-N-281 |
| NACE | NACE MR0175 / ISO 15156, where applicable |
Forms of Stainless Steel 316L Plates & Sheets
Monel 400 Bars 
Monel 400 Pipes & Tubes 
Monel 400 Pipe Fittings 
Monel 400 Flanges 
Monel 400 Plates 
Monel 400 Rods
Monel 400 vs Monel K-500
| Feature | Monel 400 | Monel K-500 |
| UNS | N04400 | N05500 |
| Alloy Family | Nickel-Copper | Nickel-Copper |
| Strengthening | Solid solution / cold work | Age hardening |
| Typical Application | Corrosion resistance + toughness | Higher-strength applications |
| Plate/Sheet Availability | Yes | Specification dependent |
Need help selecting between Monel 400 and another nickel alloy? Contact our technical team with your service conditions.
Monel 400 Plate & Sheet Dimensions
| Product Form | Typical Thickness | Typical Width | Typical Length |
| Monel 400 Sheet | 0.5–6 mm | Up to ~1500 mm | Custom |
| Monel 400 Plate | 6–100+ mm | Up to ~2500 mm | Custom |
| Cut-to-Size Plate | As required | Custom | Custom |
| Cold Rolled Sheet | Thin gauge | Mill dependent | Custom |
| Hot Rolled Plate | Medium/heavy gauge | Mill dependent | Custom |
Inspection & Testing of Stainless Steel 316L Plates & Sheets
