2205 Duplex Stainless Steel, designated UNS S32205 or S31803, is a nitrogen-enhanced duplex alloy that combines approximately equal proportions of austenite and ferrite phases, giving it a unique balance of high strength and excellent corrosion resistance. Compared to conventional austenitic stainless steels such as 304L or 316L, 2205 offers roughly twice the yield strength while maintaining superior resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. It also demonstrates strong resistance to erosion, fatigue, and general corrosion, making it a cost-effective choice in aggressive environments. Because of these properties, 2205 is widely used across multiple industries. In the oil and gas sector, it is employed in piping systems, risers, heat exchangers, and subsea equipment exposed to seawater and corrosive fluids. In chemical processing, it is utilized for tanks, pressure vessels, and process piping handling chlorides, acids, and caustic solutions. The pulp and paper industry relies on 2205 for bleaching equipment and digesters due to its resistance to acidic and chloride-rich environments, while desalination plants adopt it for evaporators and piping systems. In addition to large-scale applications, 2205 is manufactured into fasteners such as bolts, screws, nuts, studs, and washers, which provide high strength and long-term corrosion resistance in demanding structural, mechanical, and marine assemblies.
2507 Super Duplex Stainless Steel, designated UNS S32750, is a super duplex alloy engineered to provide exceptional strength and corrosion resistance in the most demanding environments. Its microstructure, consisting of roughly equal parts austenite and ferrite, delivers a unique combination of properties: extremely high tensile and yield strength, outstanding resistance to pitting and crevice corrosion, and superior protection against chloride stress corrosion cracking. With a high chromium, molybdenum, and nitrogen content, 2507 is particularly effective in seawater and other chloride-rich environments where standard stainless steels and even conventional duplex grades may fail. Because of these attributes, 2507 is widely used across industries such as oil and gas, chemical processing, desalination, and marine engineering. In offshore platforms and subsea equipment, it is chosen for risers, pipelines, pumps, and manifolds that face high pressure and corrosive seawater. In desalination plants, 2507 is employed in evaporators, heat exchangers, and high-pressure piping systems. Chemical and petrochemical facilities also use it for pressure vessels, reactors, and storage tanks that handle aggressive acids and chlorides. Beyond large-scale equipment, 2507 is produced into fasteners including bolts, screws, studs, nuts, and washers, which provide both high mechanical strength and long-term corrosion resistance in critical structural, pressure-containing, and marine assemblies.
Learn More
Ferralium® 255, also designated UNS S32550, is a super duplex stainless steel alloy that combines excellent corrosion resistance with very high mechanical strength, making it a preferred material for demanding applications in aggressive environments. With a balanced microstructure of approximately equal parts austenite and ferrite, along with elevated levels of chromium, molybdenum, and nitrogen, Ferralium® 255 exhibits outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. Its yield strength is more than twice that of conventional austenitic stainless steels such as 304L and 316L, while still offering good toughness and weldability. Because of these properties, Ferralium® 255 is used extensively in industries such as chemical processing, marine, desalination, oil and gas, and pulp and paper. In chemical plants, it is utilized for tanks, piping, agitators, and heat exchangers handling acids, alkalis, and chlorides. In marine and offshore service, it is chosen for seawater piping, pumps, valves, and subsea components exposed to high salinity. Desalination facilities employ Ferralium® 255 in evaporators and brine-handling systems, while the pulp and paper industry applies it in bleaching equipment. In addition to large-scale equipment, Ferralium® 255 is manufactured into fasteners such as bolts, nuts, screws, studs, and washers, offering exceptional strength and corrosion resistance for critical assemblies.
Zeron® 100, designated UNS S32760, is a super duplex stainless steel that combines outstanding corrosion resistance with very high mechanical strength, making it ideal for the most demanding environments. Its balanced austenite-ferrite microstructure, enhanced by high chromium, molybdenum, tungsten, and nitrogen content, provides excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking, even in warm seawater and aggressive chemical conditions. With yield strength more than twice that of conventional stainless steels such as 304L and 316L, Zeron® 100 offers significant durability, toughness, and cost savings through reduced section thickness while still retaining good weldability. Because of these attributes, Zeron® 100 is widely used in industries including oil and gas, desalination, marine, chemical processing, and pulp and paper. Offshore platforms and subsea operations rely on it for risers, manifolds, pipelines, pumps, and valves exposed to high pressure and seawater. In desalination plants, it is employed in evaporators, heat exchangers, and brine handling systems. The chemical and petrochemical sectors use it for pressure vessels, storage tanks, and piping systems handling aggressive acids and chlorides, while the pulp and paper industry applies it in bleaching and digesting equipment. Zeron® 100 is also produced into fasteners such as bolts, nuts, studs, screws, and washers, providing high strength and long-term corrosion resistance in critical structural and pressure-retaining assemblies.
Learn More
