UNS S31254 /254SMO/F44/1.4547
254SMO is a super Austenitic Stainless Steel. It is designed with a combination of impact toughness resistance to chloride stress corrosion cracking, and pitting and crevice corrosion with strength that is twice that of the stainless steel 300 series.
ASTM A182 F44 Duplex 254SMO S31254 Flange is a premium quality stainless steel product that offers high strength, durability, and corrosion resistance to a wide range of applications. This particular flange is made using ASTM A182 F44 254smo material, which is a type of austenitic stainless steel that contains a high level of molybdenum and nitrogen to provide enhanced resistance to pitting and crevice corrosion.
The A182 F44 SS Flanges themselves are available in a variety of sizes and styles to meet the needs of different applications. They can be found in different pressure classes, including 150#, 300#, and 600#, with raised face or flat face options. The flanges can also come in different shapes, such as slip-on, blind, socket weld, and threaded etc.


The following sections will discuss in detail about Stainless Steel Grade 254SMO.
Stainless Steel Grade 254SMO Chemical Composition, %
|
Ni |
Fe |
Cr |
Cu |
Mo |
N |
|
|
17.5~18.5 |
Balance |
19.5~20.5 |
0.5~1.0 |
6.0~6.5 |
0.18~0.22 |
|
|
C |
Mn |
P |
S |
Si |
||
|
0.002max |
1.0max |
0.030max |
0.010max |
0.80max |
||
Duplex SS Grade 254SMO Mechanical Properties
|
Material Grade |
Yield Strength, Min(Mpa) |
Tensile Strength, Min(Mpa) |
Elongation,Min( %) |
|
254SMO |
300 |
650~820 |
28 |
ASTM A182 F44 Flange Application
Oil and Gas Industries
Food Processing Industries
Equipments
Pipeline
Power Industries
Ship Building Industries
Paper Industries
Cement Industries
Chemical Industries
GNEE STEEL is a professional supplier of stainless steel pipe fittings, especially stainless steel flanges, including stainless steel welding flanges, stainless steel blind flanges, etc. Please contact us if you need it.ss@gneesteel.com





