UNS S32760 Super Duplex Stainless Steel Round bar(Zeron 100 / 1.4501/F55) Super Duplex Alloy UNS S32760 (F55 / 1.4501) has excellent corrosion resistance to a wide variety of media, with outstanding resistance to pitting and crevice corrosion in seawater and other chloride containing environments, with Critical Pitting Temperature exceeding 50°C. Providing higher strength than both austenitic and 22% Cr Duples Stainless Steels UNS S32760 (F55) is suited to a variety of applications in industries such as Chemical Processing, Oil & Gas, and Marine environments. UNS S32760 (F55 / 1.4501) is listed in NACE MR 01 75 for sour service and having gained ASME Approval for Pressure Vessel applications.
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Alloy
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Common Name
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Related Specifications
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Tensile Strength
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Proof Stress
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Elongation
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British
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European
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United States
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Super Duplex Alloy S32760
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Zeron 100
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1.4501
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UNS S32760
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F55
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750 [109]
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550 [79.8]
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25
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Chemical Composition
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Cr
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Ni
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Mo
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Cu
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W
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C
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N
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Mn
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Si
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P
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S
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Fe
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MIN
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24.0
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6.0
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3.0
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0.5
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0.5
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--
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0.2
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--
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--
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--
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--
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--
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MAX
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26.0
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8.0
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4.0
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1.0
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1.0
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0.03
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0.3
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1.0
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1.0
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0.030
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0.010
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Balance
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Physical property
| Density (Kg.m-3)
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7810
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Magnetic Permeability
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33
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Young's Modulus (N/mm2)
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199 x 103
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Fracture Toughness, KQ (MPa.m?)
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98
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Specific Heat, 20°C (J.Kg-1.°K-1)
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475
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Specific Electrical Resistance, 20°C (μO.m)
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0.80
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Thermal conductivity, 20°C (W.m-1.°K-1)
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14.2
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Mean coefficient of thermal expansion, 20-100°C (°K-1)
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11.1 x 10-6
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Key Features of UNS S32760
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Resistant to pitting and crevice corrosion in warm seawater with a guaranteed corrosion performance (PREN > 40)
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Lower more stable price compared to nickel based alloys
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Excellent resistance to stress corrosion cracking in both chloride and sour environments
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Superior resistance to sulfuric acid at most concentrations
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Improved resistance over austenitic stainless to erosion corrosion and corrosion fatigue
Application of UNS S32760 Duplex Stainless Steel
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Chemical Process Industry:
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Nitric Acid Processes, Polypropylene Production, PVC Production, Dioxide, Caustic Evaporators, Equipment
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Handling Organic and Fatty Acids
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Marine Industry and Shipbuilding:
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Propellers and Shafts, Rudders, Shaft Seals, Pumps, Bolts and Fasteners, Valves, Instrumentation, Oil and Chemical Tankers
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Oil and Gas Industry:
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Pumps, Valves, Pipe, Vessels, Wellhead Equipment, Subsea Equipment
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Pollution Control:
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Fans and pumps, Wet Scrubbers, Incinerators
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Pulp and Paper Industry:
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Black liquor heater tubes, Digester Blow Valves, Rotary Feed Valves, I.D.Fans, Brownstock Washers, Precipitators, Bleaching Components
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Food Industry:
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Sugar Cane Centrifuges, Corn and Vegetable processing plant
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Agrochemicals:
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Fertiliser Production (Wet phosphoric acid)
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Civil Engineering:
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Sewage Treatment
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Size Range: O.D.: 6mm-500mm
