254SMO

254SMO is an austenitic stainless steel designed for maximum resistance to pitting and crevice corrosion. With high levels of chromium, molybdenum, and nitrogen, 254SMO is especially suited for high chloride environments such as brackish water, seawater, pulp mill bleach plants and other high chloride process streams. 254SMO offers chloride resistance superior to that of Alloy 904L, Alloy 20, Alloy 825 and Alloy G. 254SMO is compatible with the common austenitic stainless steels. It is often used as a replacement in critical com- ponents of larger constructions where Type 316L or 317L has failed by pitting, crevice attack, or chloride stress corrosion cracking. In new construction, 254SMO has been found in many cases to be a technically adequate and much less costly substitute for nickel-based alloys and titanium.

254SMO is substantially stronger than the common austenitic grades, but is also characterized by high ductility and impact strength. 254SMO is readily fabricated and welded.

Chemical Composition

C Cr Cu Mn Mo N Ni P Si S
Max Max Max Max Max
0.02 19.5 – 20.5 0.5 – 1.0 1.0 6.0 – 6.5 0.18 – 0.22 17.5 – 18.5 0.03 0.80 1.01

Design Features

  • High resistance to pitting, crevice and general corrosion.
  • Very high resistance to chloride stress corrosion cracking.
  • 50% stronger than 300-series austenitic stainless steels.
  • Excellent impact toughness.
  • Excellent workability and weldability.

Typical Applications

  • Seawater handling equipment
  • Pulp mill bleach systems
  • Tall oil distillation columns and equipment Chemical processing equipment
  • Food processing equipment
  • Desalination equipment
  • Flue gas desulfurization scrubbers
  • Oil and gas production equipment

Alloy 254SMO

Availability

  • Alloy 254SMO Weld Pipe 3/4” – 24”
  • Alloy 254 SMO Butt-Weld Fittings 3/4” – 24”
  • Alloy 254 SMO Flanges 3/4″ – 24”
  • Alloy 254 SMO Bar 1″ – 8″

Specifications

  • ASTM A312, A403, A182
  • ASME SA312, SA403, SA182

Tensile Requirements

254SMO has incredible strength, including 94 (KSI) tensile strength and 44 (KSI) yield strength. You can transform the KSI measurements to Megapascal (MP) measurements by multiplying the KSI by 6.895.

When you need a dependable alloy 254SMO pipe distributor, call us at 908.526.1222.

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