Monel400 implementation standards ASTM B127, ASTM B164, ASTM B165 N04400 application areas 2.4360 corresponding grades
Monel400 implementation standards ASTM B127, ASTM B164, ASTM B165 N04400 application areas 2.4360 corresponding grades
Monel400 corrosion-resistant alloy UNS N04400 nickel-copper alloy W.Nr.2.4360 seawater corrosion resistant NAS NW400
Monel400 Overview:
Monel400 alloy (UNS N04400, 2.4360) is a single-phase solid solution Ni-Cu alloy, which is nickel-based alloy. It can withstand various corrosive environments and has good ductility.
It has good corrosion resistance in many media environments. From slightly oxidizing media environments to neutral environments to suitable reducing environments, it has good corrosion resistance. It has a long history of use as a corrosion-resistant material.
Monel 400 alloy is also used in underwater environments and non-oxidizable chloride solutions.
Corresponding grades of Monel 400:
UNS N04400, W.Nr.2.4360, NAS NW400, NCu30, 30 nickel-copper alloy, alloy400
Monel 400 implementation standards:
ASTM B127, ASTM B164, ASTM B165.
chemical composition of Monel 400
| Alloy | Element | Content (% by weight) |
|---|---|---|
| Monel 400 | Nickel (Ni) | Min 63 / Max - |
| Copper (Cu) | Min 28 / Max 34 | |
| Iron (Fe) | Min - / Max 2.5 | |
| Carbon (C) | Min - / Max 0.3 | |
| Manganese (Mn) | Min - / Max 2.0 | |
| Silicon (Si) | Min - / Max 0.5 | |
| Sulfur (S) | Min - / Max 0.024 |
physical properties of Monel 400
| Property | Value |
|---|---|
| Density | 8.83 g/cm³ |
| Melting Point | 1300-1390 °C |
minimum mechanical properties of Monel 400 at room temperature
| Alloy & Condition | Tensile Strength (Rm) | Yield Strength (Rp0.2) | Elongation (A5) |
|---|---|---|---|
| Monel 400 | 480 N/mm² (MPa) | 170 N/mm² (MPa) | 35% |
Monel 400 characteristics:
Monel400 is a corrosion-resistant alloy with the largest usage, the widest application and excellent comprehensive performance. This alloy has excellent corrosion resistance in hydrofluoric acid and fluorine gas media, and also has excellent corrosion resistance to hot concentrated alkali solution. At the same time, it is also resistant to corrosion by neutral solutions, water, seawater, atmosphere, organic compounds, etc. An important feature of this alloy is that it generally does not produce stress corrosion cracks and has good cutting performance.
Metallographic structure of Monel 400:
The structure of Monel400 alloy is a high-strength single-phase solid solution.
Corrosion resistance of Monel 400:
Monel400 alloy has excellent corrosion resistance in fluorine gas, hydrochloric acid, sulfuric acid, hydrofluoric acid and their derivatives. At the same time, it is more corrosion-resistant than copper-based alloys in seawater. Acid medium: Monel400 is corrosion-resistant in sulfuric acid with a concentration of less than 85%. Monel400 is one of the very few important materials that can resist hydrofluoric acid. Water corrosion: Monel400 alloy has excellent corrosion resistance in most water corrosion conditions, and pitting corrosion and stress corrosion are rarely found, with a corrosion rate of less than 0.025mm/a. High temperature corrosion: The maximum temperature of Monel400 in continuous operation in air is generally around 600℃. In high-temperature steam, the corrosion rate is less than 0.026mm/a. Ammonia: Due to the high nickel content of Monel400 alloy, it can resist corrosion under anhydrous ammonia and ammoniation conditions below 585℃.
Monel 400 welding:
For welding of MONEL400 alloy, AWS A5.14 welding wire ERNiCu-7 or AWS A5.11 welding rod EniCrCu-7 is recommended
Application scope of Monel 400 Application fields include:
1. Seamless water pipes and steam pipes in power plants
2. Seawater exchangers and evaporators
3. Sulfuric acid and hydrochloric acid environments
4. Crude oil distillation
5. Pump shafts and propellers for equipment used in seawater
6. Equipment for uranium refining and isotope separation in the nuclear industry
7. Pumps and valves used in the manufacture of hydrochloric acid equipment
8. Marine and chemical processing equipment
9. Valves, water pumps, propeller shafts
10. Gasoline and clean water tanks
11. Processing containers and pipelines
12. Heat exchangers
Monel 400 Typical engineering applications:
1. Feedwater and steam generator piping systems in power plants;
2. Heater and evaporator main parts in salt plants;
3. Alkylation units for sulfuric acid and hydrofluoric acid;
4. Industrial heat exchangers;
5. Composite plates in crude distillation units;
6. Wave shields for offshore units;
7. Shafts of propellers and pumps in seawater systems;
8. Uranium and isotope separation systems in nuclear fuel production;
9. Pumps and valves in hydrocarbon chlorination production;
10. MEA reboiler piping.
Main specifications of Monel 400:
Monel 400 seamless pipe, Monel 400 steel plate, Monel 400 round steel, Monel 400 forging, Monel 400 flange, Monel 400 ring, Monel 400 welded pipe, Monel 400 steel strip, Monel 400 straight bar, Monel 400 wire and supporting welding materials, Monel 400 round cake, Monel 400 flat steel, Monel 400 hexagonal bar, Monel 400 reducer, Monel 400 elbow, Monel 400 tee, Monel 400 processed parts, Monel 400 bolts and nuts, Monel 400 fasteners.
