Alloy 400 is a very versatile corrosion resistant material. It exhibits resistance to corrosion in many reducing environments, and it is generally more resistant than higher copper alloys to oxidizing media. Alloy 400 is one of the few materials that will withstand contact with fluorine, hydrofluoric acid, hydrogen fluoride or their derivatives. The alloy has been found to offer exceptional resistance to hydrofluoric acid in all concentrations up to the boiling point. Alloy 400 also resists sulfuric and hydrochloric acids under reducing conditions. It has outstanding resistance to neutral and alkaline salts and has been utilized for many years as a material of construction for salt plants.
Alloy400/UNSN04400/Monel 400/2.4360 Chemical Composition:
| Grade | Cu | Fe | Mn | C | Si | S | Ni |
| N04400 | 28.00-34.00 | ≤2.50 | ≤2.00 | ≤0.30 | ≤0.50 | ≤0.024 | ≥63.00 |
Alloy400/UNSN04400/Monel 400/2.4360 Mechanical Properties:
| Grade | Condition | Tensile Strength ksi(MPa) | Yield Strength ksi(MPa) | Elongation(%) |
| N04400 | Annealed | ≤85(585) | ≥28(195) | ≥32 |
| N04400 | Half-Hard | ≥85(585) | ≥55(380) | ≥12 |
| N04400 | Full-Hard | ≥110(760) | ≥90(620) | ≥3 |
our Services:
EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
Size : OD 19.05mm – 457mm, Thickness : 1.65mm – 42.24mm
Raw Materials Certificate
100% Radiography Test Report
100% PMI
Heat Treatment Charts
Third Party Inspection Report
Surface roughness and size measurement
Manufacturer Test Certificate( Impact Testing, Flatten, Spin,Curve, Hardness, Intergranular ,Point corrosions, Grain size, ET,UT, HT…)
Laboratory Test Certificate from Govt. Approved Lab
ASTM B165 Nickel Alloy400/UNSN04400/Monel 400 Applications:
Feed-Water and Steam-Generator Tubing:
Monel 400 is commonly used in feed-water and steam-generator tubing.
Its corrosion resistance and mechanical properties make it suitable for these critical components.
Brine Heaters and Seawater Scrubbers:
In marine engineering, Monel 400 finds applications in brine heaters and seawater scrubbers.
Its resistance to seawater corrosion ensures durability in harsh marine environments.
Sulfuric Acid and Hydrofluoric Acid Alkylation Plants:
Monel 400 is employed in chemical processing facilities, especially where it’s exposed to aggressive acids.
Its excellent corrosion resistance makes it valuable in these applications.
Pickling Bath Heating Coils:
The alloy is used in pickling bath heating coils.
Its ability to withstand corrosive environments ensures efficient operation in metal processing
Transfer Piping from Oil Refinery Crude Columns:
Monel 400 is utilized in oil refineries for transfer piping from crude columns.
Its strength and resistance to corrosion contribute to the reliability of these pipelines.
Uranium Refining and Nuclear Fuel Production:
Monel 400 plays a role in uranium refining and nuclear fuel production.
Its properties ensure safety and longevity in handling radioactive materials.
Manufacturing of Perchloroethylene and Chlorinated Plastics:
The alloy is used in the production of chemicals like perchloroethylene and chlorinated plastics.
Its non-toxic nature and corrosion resistance are advantageous.
Monoethanolamine (MEA) Reboiling Tubes:
Monel 400 is employed in MEA reboiling tubes.
Its thermal conductivity and resistance to corrosion make it suitable for heat-transfer applications.
Monel 400’s unique combination of properties allows it to thrive in challenging environments across various industries.