Seamless & Welded Tubing Seamless & Welded Pipe Alloy Pipe Fittings, Alloy Flanges, Alloy Valves Round Bar, Plate/Sheet Specialty Forgings

Super Duplex Stainless Steel UNS S32750 & UNS S32760 Super Duplex Plate/Sheet Super Duplex Seamless & Welded Tube Super Duplex Seamless & Welded Pipe Super Duplex Round Bar Super Duplex Flanges F53/F55 Super Duplex Specialty Forgings Super Duplex Seamless & Welded BW Fittings Alloys Now offers a large variety of products in Super Duplex Stainless Steel alloys such as tubing, seamless- and welded pipe, butt weld fittings, flanges, round bar and plate products: Super Duplex Stainless Steel Ferritic Austenitic UNS S32750   UNS S32760   UNS S32550 (Ferralium 255) Tubing Seamless 1/16" - 2" OD 0.016" - 0.250" WT 3 mm - 50 mm OD 0.5 mm - 6.0 mm WT Tubing Welded 1/2" - 6" OD 0.035" - 0.500" WT 12 mm - 150 mm OD 1.0 mm - 12.0 mm WT Pipe Seamless & Welded 1/2" - 36" Sch 10S thru Sch XXS Butt Weld Fittings Seamless & Welded 1/2" - 36" Sch 10S thru Sch XXS Flanges WN & Blind 1/2" - 36" Sch 10S thru Sch 40S 150lb - 300lb Round Bar 1/2" - 12" Plate 1/8" - 2" thick The first-generation duplex stainless steels were developed more than 70 years ago in Sweden for use in the sulfite paper industry. Called duplex because of its mixed microstructure with about equal proportions of ferrite and austenite, duplex stainless steels are a family of grades, which range in corrosion performance depending on their alloy content. The term Super Duplex was first used in the 1980s to denote highly alloyed, high-performance "super" duplex steel with a pitting resistance. BENEFITS OF SUPER DUPLEX STAINLESS STEEL High strength, High resistance to pitting, crevice corrosion resistance. High resistance to stress corrosion cracking, corrosion fatigue and erosion, Excellent resistance to chloride stress-corrosion cracking High thermal conductivity Low coefficient of thermal expansion Good sulfide stress corrosion resistance, Low thermal expansion and higher heat conductivity than austenitic steels, Good workability and weldability, High energy absorption. SUPER DUPLEX APPLICATIONS Heat exchangers, tubes and pipes for production and handling of gas and oil, Heat exchangers and pipes in desalination plants, Mechanical and structural components, Power industry FGD systems, Pipes in process industries handling solutions containing chlorides, Utility and industrial systems, rotors, fans, shafts and press rolls where the high corrosion fatigue strength can be utilized, Cargo tanks, vessels, piping and welding consumables for chemical tankers. High-strength, highly resistant wiring. UNS S32750 Carbon Chromium Manganese Molybdenum Nitrogen Nickel Phosphorus Sulfur Silicon   0.030 max 24.0-26.0 1.20 max 3.0-5.0 0.24-0.32 6.0-8.0 0.035 max 0.020 max 0.8 max   UNS S32760 Carbon Chromium Copper Manganese Molybdenum Nitrogen Nickel Phosphorus Sulfur Silicon Tungsten 0.03 max 24.0-26.0 0.5-1.0 1.0 max 3.0-4.0 0.2-0.3 6.0-8.0 0.03 max 0.01 max 1.0 max 0.5-1.0 Other: %Cr + 3.3%Mo + 16x%N -- 40 min UNS S32550 (Ferralium 255) Carbon Chromium Copper Manganese Molybdenum Nitrogen Nickel Phosphorus Sulfur Silicon 0.04 max 24.0-27.0 1.50-2.50 1.5 max 2.9-3.9 0.10-0.25 4.50-6.50 0.04 max 0.030 max 1.00 max Trade Name UNS Super Duplex Industry Specifications Chemical Composition Min.Tensile (KSI) Min.Yield (KSI) Elongation 2" % SAF 2507 UNS S32750 ASTM A182 F53, A240, A479, A789, A790, A815, A928, A949, A988 SAE J405 C 0.030 max Cr 24.0-26.0 Mn 1.20 max Mo 3.0-5.0 N 0.24-0.32 Ni 6.0-8.0 P 0.035 max S 0.020 max Si 0.8 max 116 80 15   UNS S32760 ASTM A182 F55, A240, A276, A314, A473, A479, A789, A790, A815, A988 SAE J405 C 0.03 max Cr 24.0-26.0 Cu 0.5-1.0 Mn 1.0 max Mo 3.0-4.0 N 0.2-0.3 Ni 6.0-8.0 P 0.03 max S 0.01 max Si 1.0 max W 0.5-1.0 Other %Cr+3.3x%Mo+16x%N = 40 min 109 80 15 This is a Duplex alloy stainless steel designed to feature high strength, resistance to pitting, stress corrosion cracking, erosion corrosion and corrosion fatigue, crevice corrosion and strong weldability. Super Duplex Applications Super Duplex Applications Oil and gas industry equipment, Offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, injection and ballast water systems, Chemical process industries, heat exchangers, vessels, and piping, Desalination plants, high pressure RO-plants and seawater piping, Mechanical and structural components, high strength, corrosion-resistant parts, Power industry FGD systems, utility and industrial scrubber systems, absorber towers, ducting, and piping. Super Duplex Corrosion Resistance The high chromium and molybdenum content of Super Duplex makes it extremely resistant to uniform corrosion by organic acids like formic and acetic acid. Super Duplex also provides excellent resistance to inorganic acids, especially those containing chlorides.