254 SMO

254 SMO | UNS S31254

Description

254 SMO is an austenitic steel designed for maximum resistance to pitting and crevice corrosion. With high levels of chromium, molybdenum and nitrogen, 254 SMO is especially suited for high chloride environments such as brackish water, seawater, pulp mill bleach plants and other high-chloride process streams. In new construction, 254 SMO has been found in many cases to be technically adequate and much less costly substitute for nickel-based alloys and titanium. 254 SMO is readily fabricated and welded.

Limiting Chemical Composition %

C

Cr

Cu

Mn

Mo

N

Ni

P

Si

S

MAX
0.02

19.5 – 20.5

0.5 – 1.0

MAX
1.0

6.0 – 6.5

0.18 – 0.22

17.5 – 18.5

MAX
0.03

MAX
0.80

MAX
0.010

Typical Industrial 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

Tensile Requirements

Tensile Strength
(ksi)

Yield Strength
(ksi)

94

44

NOTE: The information and data in this product data sheet have been compiled from a variety of sources, and should be considered as a general guide only. The information and data included are accurate to the best of our knowledge, and may be revised at any time without notice. Energy Metals Inc. assumes no responsibility for the accuracy of this information.

PDF
Alloy 254 SMO Specification Sheet
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