
UNS S31803 is a duplex (austenitic-ferritic) stainless steel, widely known by its trade designation 2205 and DIN number 1.4462. It combines the high strength of ferritic stainless steel with the corrosion resistance of austenitic grades, making it the dominant material for seawater piping, chemical process equipment and oil & gas applications. Nifty Alloys stocks S31803 / 2205 in round bar, flat bar, plate and pipe from Dubai, supplied with EN 10204 3.1 MTCs and NACE MR0175 compliance certification to UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain and export markets.
Applications
Chemical Composition
Designation cross-reference
Mechanical Properties
Certifications and available forms
Corrosion Resistance and NACE MR0175



Nifty Alloys LLC is a trusted UNS S31803 Duplex Stainless Steel supplier in Dubai, UAE, offering high-performance Duplex 2205 stainless steel (EN 1.4462 / ASTM F51) widely used for oil & gas equipment, offshore structures, heat exchangers, pressure vessels, and chemical processing systems. UNS S31803 has a duplex microstructure combining austenitic and ferritic phases, providing high strength and excellent resistance to pitting, crevice corrosion, and chloride stress corrosion cracking, making it ideal for aggressive industrial environments. We supply UNS S31803 duplex stainless steel bars, plates, sheets, and custom-cut sizes with Mill Test Certificates, with fast delivery across the GCC region including UAE, Saudi Arabia, Qatar, Kuwait, Oman, and Bahrain, along with global exports to Europe, Asia, Africa, and the Americas.