254 SMO®

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Metal Tek 254 SMO® Super Austenitic Stainless Steel

Delta Fastener Corp. can provide a wide variety of fasteners, nuts, bolts, sockets, washers and more in 254SMO Fasteners. If we do not have your item in stock (Inch or Metric) we can have these manufactured to your specification.

Material Notes:

Corrosion resistance approaching nickel alloys, especially in chloride service. Produced under license of Avesta Jernverk AB.

Application:

Process piping exposed to flue gas and solutions. Cast UNS ; Cast Grade CK3MCuN; Cast ASTM A351, A743, A744; Wrought UNS S31254; Wrought Grade 254 SMO®

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Mechanical Properties Metric English Comments
Tensile Strength, Ultimate >= 550 MPa >= 79800 psi
Tensile Strength, Yield >= 260 MPa >= 37700 psi
Elongation at Break >= 35.0 % >= 35.0 %

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Component Elements Properties Metric English Comments
Carbon, C <= 0.025 % <= 0.025 %
Chromium, Cr 19.5 - 20.5 % 19.5 - 20.5 %
Copper, Cu 0.50 - 1.0 % 0.50 - 1.0 %
Iron, Fe 49.535 - 56.32 % 49.535 - 56.32 %
Manganese, Mn <= 1.20 % <= 1.20 %
Molybdenum, Mo 6.0 - 7.0 % 6.0 - 7.0 %
Nickel, Ni 17.5 - 19.5 % 17.5 - 19.5 %
Nitrogen, N 0.18 - 0.240 % 0.18 - 0.240 %
Silicon, Si <= 1.0 % <= 1.0 %

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Descriptive Properties
Heat Treatment Sol. Anneal

Information provided by MetalTek and MatWeb

Disclaimer: The dimensions listed are for reference only. Sizes not listed may be available off the shelf or can be manufactured to customer requirements.

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