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Stainless Steels

How does 254SMO compare with super duplex stainless steels?

254SMO (UNS S31254, ASTM F44, 1.4547) is a super austenitic stainless steel, that can be substituted by super duplex for many applications.

What is the UNS S32750 casting grade equivalent?

The nearest equivalent cast specifications to UNS S32750 are ASTM A890, ASTM A995 and ASME SA351/995 grade CE3Mn or 5A.

What is the UNS S32760 casting grade equivalent?

The nearest equivalent casting specifications for UNS S32760 are ASTM A890, ASTM A995 and ASME SA351/995 grade CD3MWCuN or 6A.

What is the PREN of S31254?

S31254 is the Unified Numbering System (UNS) designation for an austenitic stainless steel alloy most commonly known as 254SMO or 6Mo.

What is SAF2507?

SAF2507 is a registered trademark of Sandvik. SAF stands for Sandvik Austenite Ferrite, whilst 2507 references the UNS S32750 caption.

What is S31803?

S31803 is the Unified Numbering System (UNS) designation for the original duplex stainless steel.

What is super duplex pipe?

The superior combination of strength and corrosion resistance achieved by super duplex stainless steels makes them an ideal choice for piping.

What is the PREN of super duplex stainless steels?

The industry specifications NACE MR1075 and Norsok M650 would require the three main super duplex stainless steels to have a PREN>40.

How do super austenitic and super duplex stainless steels compare?

Super duplex stainless steels have comparable corrosion resistance, but greater strength and lower costs than super austenitics.

How straightforward is super duplex welding?

By following the correct weld procedures and using suitable filler metals, it is possible to achieve good welds in super duplex alloys.

What is the super duplex stainless steel price?

The cost to produce super duplex stainless steel will depend upon the exact composition, product form, size, inspection and mill producer.

Super Duplex

Is 2205 a super duplex stainless steel?

The grade UNS S32205 (1.4462, F51) is the most commonly specified duplex stainless steel.

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