Monel 400
Introduction
Overview of Monel 400 Alloy
Monel alloy 400 (UNS N04400/W.Nr. 2.4360) 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.
The alloy also has good mechanical properties from sub-zero temperatures up to 549°C.
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.
Corrosion Resistance of Monel 400
Monel alloy 400 exhibits resistance to corrosion by many reducing media. It is also generally more resistant to attack by oxidizing media than higher copper alloys. This versatility makes alloy 400 suitable for service in a variety of environments.
Alloy 400 is widely used in marine applications. While alloy 400 products exhibit very low corrosion rates in flowing seawater, stagnant conditions have been shown to induce crevice and pitting corrosion. Alloy 400 is also resistant to stress corrosion cracking and pitting in most fresh and industrial waters.
Monel 400 Alloy Applications
Monel Alloy 400 can be used in a variety of applications including:
- Packed columns
- Pressure vessels and reactors
- Brine heaters
- Heat exchangers
- Salt production equipment
- Pump and valve components
- Pipe work and pipe spools
Monel 400 Tags
- UNS Number: N04400
- Werkstoff Number: 2.4630
- Standards: ASTM B127, B163, B164, B165, B564, B725, B730, B366, AMS 4675, 4730, AMS 4544, 4731
Monel 400 Quality Products
Technical Data
| STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
| Alloy 400 | 2.4630 | N04400 | – | – | – | – | – | – |
Grade | % | Ni | Cu | Fe | C | Mn | Si | S |
Alloy 400/UNS N04400 | Min | Bal | 28 | |||||
Max | 34 | 2.5 | 0.3 | 2 | 0.5 | 0.024 |
| 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% |
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