Monel 400 (UNS N04400) Nickel-Copper Alloy Pipe
Monel 400 pipe is a solid-solution nickel-copper alloy known for its exceptional resistance to seawater, hydrofluoric acid, and alkaline environments. With high strength and excellent toughness across a wide temperature range, it is widely used in marine engineering, chemical processing, and oil & gas industries.
Key Features
- ✔ Outstanding resistance to seawater and marine corrosion
- ✔ Excellent resistance to hydrofluoric acid and alkalis
- ✔ High mechanical strength and toughness
- ✔ Good weldability and fabricability
- ✔ Reliable performance from sub-zero to elevated temperatures
Technical Specifications
| Item |
Details |
| Grade |
Monel 400 |
| UNS |
N04400 |
| Werkstoff No. |
2.4360 |
| Standards |
ASTM B165 / ASTM B725 / ASTM B730 / ASME SB165 |
| Pipe Type |
Seamless / Welded |
| Outer Diameter |
6mm – 610mm |
| Wall Thickness |
0.8mm – 40mm |
| Length |
Random / Fixed / Customized |
| Surface |
Annealed / Pickled / Polished |
Typical Chemical Composition (%)
| Ni (Min) |
Cu |
Fe |
Mn |
C (Max) |
| 63.0 |
28.0 – 34.0 |
2.5 |
2.0 |
0.30 |
Main Applications
Marine Engineering
Used in seawater piping systems, pumps, valves, and offshore structural components.
Oil & Gas Industry
Applied in sour gas environments and offshore production equipment.
Chemical Processing
Suitable for handling hydrofluoric acid, sulfuric acid, and alkaline solutions.
Heat Exchangers & Condensers
Provides long service life in aggressive cooling water systems.
Why Choose Voyage Metal?
- ✔ Strict chemical composition control
- ✔ PMI testing and dimensional inspection
- ✔ EN 10204 3.1 / 3.2 certification available
- ✔ Third-party inspection (SGS, BV, TUV) upon request
- ✔ Professional export packaging and global delivery
Frequently Asked Questions
1. Is Monel 400 suitable for seawater applications?
Yes, Monel 400 offers excellent resistance to seawater corrosion and is widely used in marine piping systems.
2. What is the difference between Monel 400 and Monel K500?
Monel K500 has added aluminum and titanium for precipitation hardening, providing higher strength compared to Monel 400.
3. Can Monel 400 pipe be welded?
Yes, Monel 400 has good weldability using standard nickel alloy welding methods.
4. Do you offer customized sizes?
Yes, we provide custom dimensions based on project requirements.
Request a Quote
Looking for a reliable Monel 400 pipe supplier? Our technical team is ready to support your project needs.
🌐 Website: www.voyagemetal.com
📩 Email: [email protected]
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