Monel 400 Pipe
Monel 400 Pipe
Monel 400 pipe is a robust nickel-copper alloy (around 67% Ni, 30% Cu) known for exceptional corrosion resistance, especially in marine environments, acids, and alkalis, offering excellent strength from sub-zero to high temperatures (up to 1000°F) and toughness. It’s used in demanding applications like chemical processing, oil & gas, heat exchangers, and seawater systems, available in various forms (seamless, welded, round, square) and conditions (annealed, pickled) to meet stringent industry standards (ASTM B165, UNS N04400).
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Key Properties of
Monel 400 Pipe
Monel 400 pipe primarily consists of nickel (minimum 63%) and copper (maximum 34%), with trace amounts of iron, manganese, carbon, and silicon.
It exhibits excellent corrosion resistance against seawater, reducing acids, and alkalis.
Combining high strength and toughness, it maintains performance under extreme temperatures.
It can only be hardened through cold working and cannot be hardened by heat treatment.
Element | Ni + Co | Cu | Fe | Mn | C | Si | S |
|---|---|---|---|---|---|---|---|
Min | 63 | 28 | – | – | – | – | – |
Max | – | 34 | 2.5 | 2 | 0.3 | 0.5 | 0.024 |
Property | Tensile Strength (Rm) | Yield Strength (0.2% Offset) | Elongation at Break | Hardness (Rockwell B) |
|---|---|---|---|---|
Metric Units | 517 – 620 MPa | 172 – 345 MPa | 35 – 50% | 60 – 80 HRB |
Imperial Units | 75 – 90 ksi | 25 – 50 ksi | 35 – 50% | 60 – 80 HRB |
FAQs About Monel 400 Pipe
About Our Advantages
As a manufacturer of Monel 400 pipes,we offer rigorous quality assurance and full certification,a robust inventory and fast delivery,as well as professional technical support and custom fabrication.
Strict Quality Control & Certification
We maintain a comprehensive ISO quality management system,and all Monel 400 pipes undergo rigorous testing,including ultrasonic testing (UT),hydrostatic testing,and PMI (material identification) analysis.We provide full Material Test Certificates (MTCs) compliant with ASTM B165 (seamless pipes) or B725 (welded pipes) standards,ensuring that chemical composition and physical properties fully meet the required specifications.
Large Inventory & Fast Lead Times
With robust supply chain management and ample inventory on hand,we can accommodate a wide range of specifications,from standard sizes to special wall thicknesses.
For standard sizes,we offer expedited shipping;for bulk orders or custom lengths,our flexible production lines can significantly shorten lead times,helping customers reduce project waiting costs.
Technical Expertise & Custom Fabrication
We offer not only standard pipes but also a one-stop solution that includes cutting,chamfering,polishing,and custom fabrication.
Our technical team has in-depth knowledge of the machining characteristics of Monel 400—such as welding and cold working requirements—and can provide precise,expert advice based on customer drawings or specific operating conditions,such as high-pressure marine environments.
No matter what your project needs are, we can provide fast and reliable custom solutions!
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Have a Question?
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Should you have any questions regarding stainless steel pipes & tubings, including manufacturing processes, chemical composition or other unfamiliar matters, our staff will be happy to assist you.





