Monel 400

Overview of Monel 400’s Composition and Strengths

Hello. This is Dong-A Special Metals, Inc. Today, we introduce Monel 400, a high-performance nickel-copper alloy widely used for its exceptional corrosion resistance and mechanical durability.

Monel 400 typically contains 63% nickel (Ni) and 30–34% copper (Cu), along with small amounts of iron (Fe), manganese (Mn), silicon (Si), and carbon (C). Developed in the early 20th century, this alloy remains a trusted choice in industries requiring resistance to seawater, chloride, and acid corrosion.

Monel 400 retains excellent ductility and impact strength at room temperature. Even at high temperatures, it maintains stable mechanical properties. Its tensile strength ranges from 480 to 620 MPa, making it a reliable material under pressure and stress.

This alloy’s outstanding resistance to chlorides, seawater, and acidic environments makes it indispensable for marine and chemical industries. Monel 400 is also a magnetic material, but its magnetic properties shift slightly at elevated temperatures.


Industrial Applications of Monel 400

Marine Sector

Monel 400’s high nickel content provides superior corrosion resistance in marine environments. It is widely used in:

- Seawater pumps and valves

- Propeller shafts and fasteners

- Offshore structural components

Because it withstands prolonged exposure to sodium chloride and other corrosive marine elements, it is a reliable material for ships and offshore platforms.

Chemical and Petrochemical Industries

In chemical processing plants, Monel 400 performs well in contact with strong acids such as:

- Hydrochloric acid

- Sulfuric acid

- Hydrofluoric acid

It is ideal for use in reactors, piping, heat exchangers, and storage tanks. Its ability to withstand acid corrosion makes it essential for refining, extraction, and catalytic processes.


Recycling and Resource Circularity

Monel 400’s high nickel content makes it highly suitable for metal recycling. When properly separated, Monel scrap can be re-melted into high-purity alloy material. This contributes directly to resource circularity and helps achieve carbon neutrality goals.

At Dong-A Specialty Metals, we promote sustainable metallurgy by recycling specialty alloys like Monel 400. Our technologies support re-materialization of nickel-based alloys, creating value while reducing environmental impact.



#Monel 400 #nickel-copper alloy #marine industry materials #chemical corrosion resistance #heat exchangers #Dong-A Special Metals #alloy recycling #nickel alloy #seawater resistance #carbon neutrality

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Company Catalog Download :

1) Eng : https://blog.naver.com/dongaspecial/223683563148

2) Kor : https://blog.naver.com/dongaspecial/223683558947

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1) Eng : https://blog.naver.com/dongaspecial/223683548933

2) Kor : https://blog.naver.com/dongaspecial/223683546036

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