ASTM A240 is the ‘Standard Spec for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels and General Use’.
A790 is the ‘Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe’.
ASTM A479 is the ‘Standard Specification for Stainless Steel Bars and Shapes for use in Boilers and Other Pressure Vessels’.
ASTM is the American Society for Testing and Materials, and A276 is the ‘Standard Specification for Stainless Steel Bars and Shapes’.
Super duplex stainless steel is 3-4x higher yield strength, 2x the resistance to pitting corrosion, yet less than twice the cost than 316.
Super duplex stainless steels have been used to substitute 904L (UNS N08904, 1.4539) austenitic stainless steels for many applications.
254SMO (UNS S31254, ASTM F44, 1.4547) is a super austenitic stainless steel, that can be substituted by super duplex for many applications.
The nearest equivalent cast specifications to UNS S32750 are ASTM A890, ASTM A995 and ASME SA351/995 grade CE3Mn or 5A.
The nearest equivalent casting specifications for UNS S32760 are ASTM A890, ASTM A995 and ASME SA351/995 grade CD3MWCuN or 6A.
SAF2507 is a registered trademark of Sandvik. SAF stands for Sandvik Austenite Ferrite, whilst 2507 references the UNS S32750 caption.
S31803 is the Unified Numbering System (UNS) designation for the original duplex stainless steel.
The superior combination of strength and corrosion resistance achieved by super duplex stainless steels makes them an ideal choice for piping.