UNS S31254 F44

A fully austenitic alloy with excellent corrosion resistance in a wide variety of aggressive, aqueous environments, widely used in the chemical processing and power industry for piping.

F44 is also known as 254 SMO® *, 1.4547 and SS2378.

Related specifications:

  • ASTM A182 F44
  • ASTM A479 /UNS S31254

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F44 is an austenitic stainless steel used in seawater and other aggressive chloride-bearing media. This grade has excellent resistance to pitting and crevice corrosion, high resistance to general corrosion and stress corrosion cracking, with a higher strength than conventional austenitic stainless steels, and good weldability.

We hold F44 round bar stock from 12.7mm to 189mm, although we can supply additional sizes on competitive lead times.

UNS S31254 F44 Chemical Properties


UNS S31254 F44 Mechanical Properties

Mechanical (room temperature)UTS 0.2% Proof StrengthElongationReduction in AreaHardness
650-850 Mpa300 Mpa35.00%50.00%260 HB

For more technical information download our F44 information sheet here


F44 is ideally suited to applications within the chemical and food processing industry, marine and offshore environments and the paper manufacturing industry.

Typical end uses include:

  • paper bleaching vats
  • pollution control systems
  • piping and condensers
  • pumps and valves
  • heat exchangers
  • chemical proccessing equipment

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Mark Burton


Proud Associates

Broder Metals Group Certified To AS9120
Broder Metals Group Certified To AS9120