The austenitic-ferritic stainless steel used to make Duplex 2205 flanges was created to have greater strength and corrosion resistance than stainless steels from the 300 series. It aids users in preventing stress corrosion cracking, which is frequently observed with 316 and 317 steel. Flanges made of duplex 2205 combine the ferritic alloy’s excellent strength and resistance to stress corrosion cracking with austenitic fabrication capabilities.

Flanges made of the work-hardenable, highly corrosion-resistant duplex steel. Microstructures in the austenite and ferrite stages vary. Duplex Flanges have greater corrosion resistance. Consequently, duplex steels Flanges exhibit austenitic and ferritic stainless steel’s distinctive characteristics. Duplex steel flanges cannot be hardened via heat treatment. Processing makes it harder. Duplex flanges can be used for solvent treatment or annealing after being heated to a temperature of roughly 1100°C.

Oil and gas exploration as well as the chemical processing industries use this rare Duplex Steel 2205 Pipe Flange. Due to their capacity to endure a high mechanical strain in seawater, Duplex S32205 Slip on Flanges is essential to mechanical assembly and infrastructure.

Duplex 2205 Uses

Duplex 2205 flanges are used in the chemical industry for pipes, storage vessels, and processing machinery. Duplex 2205 flanges are preferred by the pulp and paper industry for use in digesters, bleaching machinery, stock-handling systems, and liquid tanks. 2205 flanges are used in chloride and hydrogen sulfide conditions in both the marine industry and oil and gas extraction and processing. The size range for duplex steel forged flanges is 1/8 inch to 24 inches. Depending on their varying dimensions, flanges have different pressure groups.

There are several different kinds of flanges, including Duplex Weld neck flanges, Blind flanges, Orifice Flanges, Lap Joint Flanges, and Slip on Flanges. Depending on the application, each of these sorts of flanges is employed in a unique way. For seamless pipes, slip-on flanges are utilized to maintain precise connection locations. Also available are screwed, plate, forged, and threaded flanges. Male threaded pipe ends are connected with duplex steel threaded flanges. Typically, the ends of these flanges are female-threaded. Additionally, there are several types of faces, including ring-jointed, flat, and raised faces.

Duplex 2205 Grades, Chemistry & Specifications

The name “Duplex” is derived from the mixed microstructure of Duplex 2205, UNS S32205, which has about equal amounts of ferrite and austenite. This grade is the most widely used kind, and it offers significant improvements over 316 stainless steel in terms of yield strength and corrosion resistance due to its two-phase composition.

Duplex 2205 Specifications: ASTM A 240, ASTM A 276 Condition A, ASTM A 276 Condition S, ASTM A 479, ASTM A 790, NACE MR0175/ISO 15156, NORSOK MDS D45 Grade F51, UNS S31803, UNS S32205, W. NR./EN 1.4462, Werkstoff 1.4462 Duplex, ASME SA 182, ASME SA 240, ASME SA 479, ASME SA 789, ASME