UNS S32750 F53 – Super Duplex Stainless Steel

F53 is a super duplex stainless steel with a 50:50 austenite, ferrite microstructure.

The material combines high mechanical strength.

Excellent ductility and impact strength at ambient, sub-zero temperatures and corrosion resistance in a variety of environments.

Generally supplied in the annealed condition giving yield strengths in excess of 80 KSI (550Mpa), this material cannot be hardened by heat treatment but stronger surface strengths can be achieved by cold working.

Pitting Resistance Equivalent (PREn) of greater than 40 that guarantees high resistance to pitting corrosion.

High resistance to crevice and stress corrosion coupled with the increased strength give this alloy the advantage over the austenitic (300 series) and 22%Cr duplex stainless steels.

Typical applications include many components for the chemical processing, marine, oil and gas, pollution control and food industries amongst others.