1. Introduce
– Ni-Cu alloy
– Solid solution alloy that can only be hardened by cold working
– Good strength over a wide temperature range up to 538°C
– Excellent mechanical properties at sub-zero temperatures
– Applicable to pressure vessels in -10 to 480°C environments
– UNS N04400
* Monel : Ni-Cu alloy, stronger than ordinary steel and used as a structural material where corrosion resistance is required
- R Monel : Excellent machinability
- K Monel : Excellent precipitation hardenability due to the addition of Al and Ti
* UNS
- Abbreviation of Unified Numbering Systems for Metals and Alloys
- nified unique numbering system for metals and alloys
- A representative number that is compatible with metals and alloys defined in many material-related codes such as ASTM, AISI, ASME, AWS, etc.
* N : Nickel and nickel alloys
* UNS N04400 : 04XXX : Nickel Alloys, grouped by alloying elements : Copper(Monel ans casting alloys)
2. Property
– Excellent corrosion resistance, weldability, strength, toughness, stress corrosion cracking resistance
| Element | Impact |
|---|---|
| Ni | Provides excellent strength and corrosion resistance |
| Cu | Provides corrosion resistance |
[Monel 400 Chemical Composition (%)]
| Ni | Fe | C | Cu |
|---|---|---|---|
| 60.68 ~ 72.00 | Max. 2.50 | Max. 0.30 | 28.00 ~ 34.00 |
| Si | Mn | S | |
|---|---|---|---|
| Max. 0.50 | Max. 2.00 | Max. 0.02 |
[Monel 400 Mechanical Properties]
| Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | |
|---|---|---|---|
| Hot-Rolled | 579 | 282 | 39.5 |
| Cold-Drawn | 668 | 599 | 27.0 |
| Anealed | 537 | 227 | 44.0 |
[Monel 400 Physical Properties]
| Density (g/㎤) | Melting Range (℃) | Specific Heat (0-100℃), J/kg*℃ |
|---|---|---|
| 8.80 | 1300 ~ 1350 | 427 |
3. Standard & Specification
– UNS N04400
| Product Form | ASTM | ASME | SAE | DIN |
|---|---|---|---|---|
| Bar, Rod | B164, B564 | SB164, SB564 | AMS 4675, AMS 4730, AMS 4731 | 17752, 17753, 17754 |
| Sheet, Plate | B127 | SB127 | AMS 4544 | 17750 |
| Pipe, Tube | B165, B725, B163, B730, B751, B829, B775 | SB163, SB165, SB725, SB730, SB751, SB775, SB829 | AMS 4574 | – |
4. Available Form
– Bar, Rod : Round, Square
– Sheet, Plate
– Pipe, Tube : Seamless, Welded, Round, Flat, Square
5. Application & Product
– Marine, shipbuilding and seawater desalination plants, oil refining, chemicals
| Application | Product |
|---|---|
| Marine | Feed water and steam generator tubing, Brine heaters, Seawater scrubbers, Seawater valves, Pump shafts, Fishing wire, Fresh water tanks |
| Oil refining | Crude oil transfer pipes |
| Chemical | Heat exchangers, Boiler feeders |
(1) Steam generator tubing / (2) Brine heaters / (3) Seawater scrubbers
(4) Crude oil transfer pipes / (5) Heat exchangers / (6) Boiler feeders
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