Material data sheet 2.4360 / Alloy 400
International Standards:
AFNOR Nu30, UNS N04400, Alloy 400, Monel 400®, NiCu30Fe
Scopes:
High-temperature resistant, chemically resistant nickel-copper alloy. Material grade 2.4360 / Alloy 400 is characterized by excellent corrosion resistance in a wide variety of corrosive media. High resistance to stress corrosion cracking. Excellent mechanical properties at sub-freezing temperatures and good high-temperature properties up to 450°C. Resistant to flowing seawater/splash zones. Furthermore, good resistance to alkalis, salt solutions, hydrofluoric acid, non-oxidizing dilute acids, and inorganic acids.
Field of application:
| - Impellers and pump shafts in seawater systems |
| - Heat exchangers in the chemical industry |
| - Salt Industry / Petroleum Industry |
| - Feedwater and steam generator pipes in power plants |
| - Uranium refining plants and isotope separators in the production of nuclear fuels |
| - Sulfuric and hydrofluoric acid alkylation plants |
Characteristics:
| Polishability | no |
| Weldability | good |
| Machinability | goog |
| Corrosion resistance | excelent |
Physical properties:
| Density (kg/dm3) | 8,8 |
Mechanical properties:
| Hardness acc. to Brinell | 110-149 |
| 0,2 % proof strength | 172-345 N/mm² |
| Tensile strength Rm | 517-620 N/mm² |
| Strain | 60-35% |
Special properties:
| Excellent resistance to corrosive media | |
| Resistance to intergranular corrosion | |
| Seawater resistance & High resistance to pitting corrosion |
Processing:
| hammer and die forging | good |
| Machining | good |
Heat treatment:
| Hot forming | 650 - 1175°C |
| Heat treatment | 700 - 900°C |
| Stress relieve | 300℃ - 320℃ |
Chemical analysis:
| Alloy 400 | C | Si | Mn | P | S | Ni | Al | Cu | Fe | Ti |
|---|---|---|---|---|---|---|---|---|---|---|
| min. | 63,0 | 28,00 | 1 | |||||||
| max. | 0,15 | 0,50 | 2,00 | 0,02 | 0,02 | 0,5 | 34,00 | 2,50 | 0,03 |
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