General Description

Super Duplex S32760 is a ferritic-austenitic stainless steel, with excellent corrosion resistance against general corrosion, stress corrosion cracking, corrosion fatigue, pitting, crevice and erosion corrosion and possessing very high mechanical strength properties. Compared with nickel based alloys, UNS S32760 has lower and much stable price.

F55 is used in equipment for the oil & gas industry, on offshore platforms, in heat exchangers, chemical processing, pressure vessels and boilers as well as in the petrochemical industry and desalination plants, including seawater piping.

It can be made into components such as heat exchangers, separator parts, compressor and pump components, turbine blades.

Chemical Composition

Grade Ni% Cr% Fe% Mo% N% C% Mn% Si% S% P% Cu% W%
F55 6.0-8.0 24.0-26.0 Bal. 3.0-4.0 0.2-0.3 Max 0.03 Max 1.0 Max 1.0 Max 0.01 Max 0.03 0.5-1.0 0.5-1.0


UNS S32760


Werkstoff Nr. 1.4501


F55 Wire/Bar/Forging: ASTM A276/A479

F55 Sheet/Plate: ASTM A240

Physical Properties

Density:7.8 g/cm3

Mechanical Properties

Solution Annealed

Tensile: Min 750 MPa

Yield: Min 550 MPa

Elongation: Min 25%

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