General Description

254SMO (UNS N31254) is often referred to as a grade of "6% Moly" due to its molybdenum content. 254SMO is an austenitic stainless steel with high level of chromium, molybdenum and nitrogen, which gives its a good resistance to pitting and crevice corrosion, especially in environments containing halide ions, e.g. chloride, bromide and fluoride solutions. Compared with Alloy 904L, Alloy 20, Alloy 825, 254SMO has superior chloride resistance and is specially suited for high chloride environments such as brackish water or seawater.

Applications for 254SMO include petroleum production, saltwater handling, food processing and chemical processing equipment, pulp mill bleach systems, flue gas desulphurization scrubbers and tall oil distillation columns.

Chemical Composition

Grade Fe% Ni% Cr% Mo% N% C% Mn% Si% S% P% Cu%
254SMO Bal. 17.5-18.5 19.5-20.5 6.0-6.5 0.18-0.22 Max 0.02 Max 1.0 Max 0.8 Max 0.01 Max 0.03 0.5-1.0

Specifications

Grade UNS Werkstoff
254SMO S31254 1.4547

Physical Properties

Grade Density
254SMO 8.0 g/cm3

Mechanical Properties

Condition Tensile Strength Yield Strength σp0.2/MPa Elongation
 
Solution annealed Min 650 Mpa Min 300 Mpa Min 35%

Our Production Standard

Standard Bar Forging Sheet/Plate Tube/Pipe Fittings
ASTM ASTM A276
ASTM A479
ASTM A473 ASTM A240 ASTM A312 ASTM A403
ASTM A182

Size Range

254SMO bar, rod, forging, plate, sheet, pipe, fittings are available.

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