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

Duplex S32205 Flanges – Composition, Properties and Uses

Duplex S32205 Flanges

Duplex S32205 is a popular grade of stainless steel used in various industrial applications. One of the most common uses of Duplex S32205 is in the manufacturing of flanges. These flanges have excellent physical properties, mechanical properties, and corrosion resistance. In this blog post, we will discuss in detail the composition, physical and mechanical properties, and heat treatment process of Duplex S32205 Flanges. We will also shed light on the various uses of Werkstoff No 1.4462 Threaded Flanges.


What are Duplex S32205 Flanges?

UNS S31803 Blind Flanges are corrosion-resistant flanges that are made from a combination of ferritic and austenitic stainless steels. These flanges have enhanced strength and added pitting resistance compared to other stainless steel alloys, making them ideal for applications with corrosive materials. They offer high mechanical properties while remaining easy to weld and machine, allowing for wide-ranging use in industrial settings.

Duplex S32205 Flanges Composition

Duplex S32205 Flanges are made from a mixture of austenitic and ferritic steel, with a composition of 22% chromium, 3% molybdenum, and 5-6% nickel. The high content of these elements makes the material resistant to corrosion and provides high strength and durability.

Duplex Steel S32205 201
0.02 max
0.35 max
0.35 max
0.01 max
0.25 max
0.40 max
99.0 min

Duplex S32205 Flanges Physical Properties

UNS S32205 Weld Neck Flanges have excellent physical properties, such as high thermal conductivity, low thermal expansion, and good weldability. They also have a high yield strength, which enables them to withstand high pressure and temperature.

8.89 g/cm3
0.321 lb/in3
Melting point
1435 – 1446°C
2615 – 2635°F

Duplex S32205 Flanges Mechanical Properties

UNS S31803 Flanges also have high mechanical properties, such as moderate to high ductility, good hardness, and excellent fatigue resistance. They also have good toughness, which makes them suitable for use in harsh environments with high mechanical stress and vibration.

Melting Point
Tensile Strength
Yield Strength (0.2%Offset)
Duplex Steel S32205 201
8.9 g/cm3
1446 °C (2635 °F)
Psi – 67000 , MPa – 462
Psi – 21500 , MPa – 148
45 %

Duplex S32205 Flanges Uses

Duplex Steel S32205 Flanges are used in various industrial applications, such as oil & gas, chemical processing, and marine industries. These flanges are ideal for use in corrosive environments, providing excellent stress and corrosion resistance. They are also used in heat exchangers, pressure vessels, and pipelines due to their high strength and durability.

Duplex S32205 Flanges Heat Treatment

Duplex S32205 Weld Flanges are heat-treated to provide them with the desired mechanical and physical properties. Heat treatment involves heating the material to a certain temperature, holding it for a specific duration, and then cooling it down to room temperature. This process improves the material’s strength, toughness, and corrosion resistance.



In conclusion, due to their excellent physical and mechanical properties, Duplex S31803 Slip On Flanges are highly beneficial in various industrial applications. The composition of Duplex S32205 provides them with high strength, durability, and corrosion resistance. They are used in harsh environments, providing excellent stress and corrosion resistance. The heat treatment process also enhances their properties, making them ideal for use in high-pressure and high-temperature applications. If you require Duplex S32205 Flanges for your industrial needs, consult an expert to provide you with the best quality materials.

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