Monel 400
Monel 400 Alloy
What is Monel Alloy 400?
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MONEL® nickel-copper alloy 400 (UNS N04400 / W.Nr. 2.4360 and 2.4361) is a solid-solution alloy that can be hardened only by cold working. It has high strength and toughness over a wide temperature rangeand excellent resistance to many corrosive environments.
Alloy 400 is widely used in many fields, especially marine and chemical processing. Typical applications are valves and pumps; pump and propeller shafts; marine fixtures and fasteners; electrical and electronic components; springs; chemical processing equipment; gasoline and fresh water tanks; crude petroleum stills, process vessels and piping; boiler feedwater heaters andother heat exchangers; and deaerating heaters.
This nickel alloy is particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated. As would be expected from its high copper content, alloy 400 is rapidly attacked by nitric acid and ammonia systems.
Monel 400 has great mechanical properties at subzero temperatures, can be used in temperatures up to 1000° F, and its melting point is 2370-2460° F. However, alloy 400 is low in strength in the annealed condition so, a variety of tempers may be used to increase the strength.
Monel 400 Standards
ASTM B165
-Seamless Pipe & Tube
ASTM B725
-Welded Pipe & Tube
ASTM B164
-Rod, Bar & Wire
ASTM B127
-Plate, Sheet, Strip & Foil
Monel 400 Chemical Composition
Monel 400 Data Sheet
Monel 400 Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
| Alloy 400 | 2.4360 | N04400 | – | – | – | – | – | – |
Monel 400 Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.80 g/cm3 | 1350 °C (2460 °F) | 500-950Mpa | 200-900Mpa | 60% – 2% |
Monel 400 Physical Properties
| Melting Range | Specific Heat, 20°C (J/(g.K)) | Magnetic Permeability (20°C) | Thermal Conductivity, 20°C (W/(m.K)) | Curie Temperature (°C) |
| 1350 °C (2460 °F) | 427 | – | 21.8 | 21-49 |
Monel 400 Applications
Monel 400 Related Resources
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