Also called nickel-copper alloy, 2.4360, UNS N04400, seawater resistant metal material, ASTM B127 standard.
| Material | % | Ni | Cu | Fe | C | Mn | Si | S |
| Monel400 | Min. | 63 | 28 | |||||
| Max. | 34 | 2.5 | 0.3 | 2 | 0.5 | 0.024 |
| Density | 8.9g/cm3 |
| Melting | 1300-1390 ℃ |
| Material | Tensile strength Rm N/mm2 |
Yield strength RP0.2N/mm2 |
Elongation A5 % |
| Monel400 | 480 | 170 | 35 |
Monel 400 is one of the most used and versatile corrosion resistant alloys with excellent overall performance. This material has excellent corrosion resistance in hydrofluoric acid and fluorine gas media, and also has excellent corrosion resistance to hot concentrated alkaline fluids. It is also resistant to corrosion by neutral solutions, water, seawater, atmosphere, organic compounds, etc. An important feature of this material is that it generally does not produce stress corrosion cracks and has good cutting properties
The organization of Monel 400 is a high strength single phase solid solution.
Monel 400 has excellent corrosion resistance to fluorine gas, hydrochloric acid, sulfuric acid, hydrofluoric acid and their derivatives. It is also more resistant to corrosion in seawater than copper-based alloys. Acid media: Monel 400 is corrosion resistant in sulfuric acid at concentrations less than 85%. Monel400 is one of the very few important materials that can resist hydrofluoric acid. Water corrosion: Monel 400 in most cases of water corrosion, not only excellent corrosion resistance, and hole corrosion, stress corrosion, etc. are rarely found, the corrosion rate is less than 0.025mm/a. High temperature corrosion: Monel400 in the air continuous work of the maximum temperature is generally around 600 ℃, in the high temperature steam, the corrosion rate is less than 0.026mm/a. Ammonia: Due to Monel 400 alloy has a high nickel content, so it can resist corrosion under anhydrous ammonia and ammonia conditions below 585°C.
Monel 400 is a versatile material with applications in many industrial fields:
1.seamless water pipes and steam pipes in power plants.
2.Seawater exchangers and evaporators.
3.Sulfuric and hydrochloric acid environments.
4.Crude oil distillation.
5.Pump shafts and propellers for equipment used in seawater.
6.Nuclear industry equipment for the manufacture of uranium refining and isotope separation.
7.Pumps and valves for equipment used in the manufacture of hydrochloric acid production.
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