Uns S31254 (X2CrNiMoN22-5-3) is a duplex stainless steel with a two-phase microstructure consisting of austenite and ferrite. It offers high strength, good ductility, excellent stress corrosion cracking properties, high thermal conductivity, and good pitting resistance.
In terms of its use, X2CrNiMoN22-5-3 is usually used in components and equipment for seawater applications. A notable application for this alloy is for purification systems for seawater desalination. The stainless steel has a low chloride ion concentration limit, allowing it to withstand corrosion from seawater and other chloride-containing environments. Additionally, duplex stainless steels like X2CrNiMoN22-5-3 have an improved fatigue strength relative to austenitic stainless steels.
Other applications for X2CrNiMoN22-5-3 include the oil and gas sector and heat exchangers. It is typically found in heat exchangers and tubings aimed at preventing corrosion in salty and sulfuric acid environments. Here, X2CrNiMoN22-5-3 contributes to the efficiency of a wide range of oil refinery processes.
Furthermore, this stainless steel is also used in acid and alkaline-resistant conveyer systems and chemical pump parts. This is due to its superior corrosion resistance to strong oxidants and inorganic acids containing chlorides.
X2CrNiMoN22-5-3 is also often used in the making of food the preparation, processing and storage equipment. Its superior corrosion resistance and mechanical properties make X2CrNiMoN22-5-3 ideal for use in pressure vessels, pipelines, valves and other components used in these settings. Its good weldability allows for superior connections between metal parts. This helps prevent rust spots, leaks and breakdowns in metal parts in food service settings.
X2CrNiMoN22-5-3 is also used extensively in marine equipment. Its superior corrosion and pitting resistance properties make X2CrNiMoN22-5-3 an ideal choice for marine-grade steel. It is often used to make propeller shafts, trim and rudder systems, marinas and other components found in marine applications.
Overall, X2CrNiMoN22-5-3 has a wide array of uses and applications in multiple industries. Its excellent mechanical and corrosion resistance makes it an ideal choice for a range of applications, from food processing equipment to marine equipment.
