ThePipingMart Blog Products Duplex S32205 Pipes – Composition, Properties and Uses

Duplex S32205 Pipes – Composition, Properties and Uses

Duplex S32205 Pipes

Duplex S32205 Pipes are modern super duplex stainless steel pipes that improve mechanical and corrosion resistance properties. These pipes can withstand extreme temperatures and chemical attacks better than traditional materials, making them a top choice for challenging applications. This blog will explore various aspects of Duplex S32205 tubes, including their composition, physical and mechanical properties, uses, and heat treatment. By the end of this article, you’ll better understand this advanced material and its numerous advantages.


What are Duplex S32205 Pipes?

S32205 Duplex Pipes are made from a duplex stainless steel alloy blend of molybdenum, chromium, and nickel. They provide superior tolerance to corrosion and higher strength than standard austenitic stainless steels. This makes them ideal for use in highly corrosive environments such as marine or chemical processing applications.

Duplex S32205 Pipes Composition

Duplex S32205 Pipes are derived from austenite and ferrite phases, which make up this unique duplex alloy composition. This alloy’s composition typically comprises 22% chromium, 5% nickel, and 3% molybdenum. These make up the ferrite phase. On the other hand, the austenite phase comprises 18% chromium, 8% nickel, and 2% molybdenum. This combination of elements ensures that Duplex S32205 Pipes have exceptional physical properties compared to conventional stainless steel pipes.

Ni Cr Mo Mn Si C N S P Fe
MIN 4.5 22.0 3.0 0.14
MAX 6.5 23.0 3.5 2.0 1.0 0.03 0.2 0.02 0.03 Balance

Duplex S32205 Pipes Physical Properties

Duplex S32205 Seamless Pipes offer a wide range of physical properties that make them ideal for various applications. These pipes exhibit excellent tensile and yield strength, hardness, and resistance to stress corrosion cracking. They also offer excellent pitting resistance and crevice corrosion resistance and can withstand high temperatures. Finally, Duplex S32205 Pipes are highly durable and can handle extreme environments, such as those found in offshore drilling rigs.

Duplex S32205 Pipes Mechanical Properties

Duplex S32205 Pipes offer exceptional mechanical properties thanks to their unique composition. These pipes have high yield and tensile strength, resisting pressure and stress. They exhibit excellent toughness and ductility, making them tough and flexible. Additionally, Duplex S32205 Pipes exhibit excellent resistance to thermal and mechanical stresses, which makes them suitable for demanding applications.

S32205 Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
7.8 g/cm3 1350 °C (2460 °F) Psi – 80000 , MPa – 550 Psi – 116000 , MPa – 800 15 %

Duplex S32205 Pipes Uses

S32205 Duplex Pipes are used in various industries because of their high strength and superior corrosion resistance. They are particularly useful in offshore oil and gas production, chemical processing, and desalination plants. They are also ideal for heat-transferring applications in the chemical and fertilizer industries, providing excellent resistance to thermal shock and thermal fatigue. Furthermore, they can be used in piping systems for seawater and fresh water, waste disposal, and many other applications.

Duplex S32205 Pipes Heat Treatment

S32205 Welded Pipes can be heat treated to enhance their strength and durability. Heat treatment processes such as annealing and quenching can change the mechanical properties and hardness of the pipes. These processes also allow the pipes to be shaped and formed to the desired shape and size. Heat treatment also aids in the stabilization of the material, which improves its corrosion resistance and prevents cracking.

Duplex S32205 Pipes Corrosion Resistance

Duplex S32205 Pipes exhibit superior corrosion resistance compared to conventional stainless steel pipes. This resistance is due to the high amounts of molybdenum, chromium, and nitrogen in the alloy composition. These elements offer excellent resistance to pitting and crevice corrosion, which can cause pipe failures in harsh environments. The alloy composition also allows the pipes to resist sulfuric acid and hydrogen sulfide, which makes them an ideal choice for use in harsh chemical environments.



Duplex S32205 Pipes are versatile materials with unmatched corrosion resistance and mechanical properties. These pipes are used in various applications and industries where conventional stainless steel pipes would fail to function. By understanding the composition, properties, and heat treatment processes of Duplex S32205 Pipes, you can better appreciate their advantages and how they can be utilized in solving some of the most challenging engineering problems. Overall, if you’re looking for a material that offers superior corrosion resistance and mechanical strength, then Duplex S32205 Pipes are the way to go.

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