UNS S31254 Stainless Steel | SMO 254 | 1.4547 Supplier in UAE

At Nifty Alloys LLC, we are one of the leading suppliers, stockists, and exporters of UNS S31254 stainless steel (SMO 254 / WNR 1.4547) in the UAE, Middle East, and global markets. This super austenitic stainless steel is renowned for its outstanding corrosion resistance, high strength, and excellent durability in extreme environments.

SMO 254 is specifically designed to withstand aggressive chloride-rich and acidic environments where conventional stainless steels like 316 or 904L fail. It offers twice the strength of standard austenitic stainless steels, making it a preferred material for industries such as marine, chemical processing, pulp & paper, oil & gas, desalination plants, and offshore platforms.

What is UNS S31254 (F44) Stainless Steel?

UNS S31254, often referred to as F44, is a super austenitic stainless steel known for its impressive resistance to corrosion—even in tough environments like seawater or aggressive industrial settings. What sets this alloy apart is its high molybdenum content (around 6%), which equips it to handle pitting and crevice corrosion far better than standard grades like 316 stainless steel.

This material doesn’t just stand up to corrosion—it also offers a blend of strength and ductility, meaning it’s capable of withstanding significant forces without cracking or deforming, even at low temperatures. Thanks to these features, UNS S31254 is a popular choice in industries where durability and reliability are essential, such as chemical processing, marine engineering, and pulp and paper production.

Key Characteristics and Properties of UNS S31254 Stainless Steel

Known for its impressive performance in challenging environments, UNS S31254 is a super austenitic stainless steel that boasts exceptional resistance to corrosion. Thanks to its high molybdenum content—around 6%—this alloy stands out especially in applications exposed to seawater and harsh industrial settings.

• Corrosion Resistance: With a Pitting Resistance Equivalent number (PREn) soaring between 42 and 44, UNS S31254 offers outstanding defense against both pitting and crevice corrosion. This makes it a preferred choice over many standard grades like 316 stainless steel when higher protection is needed.
   
• Mechanical Properties: It delivers moderate mechanical strength—typically a yield strength above 300 MPa—while maintaining excellent ductility. Whether exposed to ambient or subzero temperatures, it retains good notch ductility, ensuring reliability in demanding situations.
   
• Comparative Performance: While its yield strength is below that of duplex and super duplex stainless steels, its resistance to localized corrosion is on par with leading super duplex grades such as UNS S32750 and S32760.

In summary, UNS S31254 is a solid alternative when you require a stainless steel that can handle both higher mechanical loads and more aggressive corrosive agents than standard austenitic stainless steels.