super duplex stainless
May 10, 2017 · Ferralium ® 255 SD50 (super duplex 255) is a super duplex stainless steel supplied in the hot worked and annealed condition. It achieves higher strengths than most stainless steels and alternative corrosion resistant alloys, offering the potential
SAF 2507 ® (UNS S32750) is a super-duplex stainless steel; a high-alloy duplex steel with a PRE value of min. 42*. The grade is characterized by very good chloride corrosion resistance, combined with very high mechanical strength. SAF 2507 ® is particularly suited for use in aggressive environments such as warm chlorinated seawater and acidic, chloride containing media. Super Duplex - Langley Alloy IncSuper Duplex stainless steels have a duplex two-phase microstructure consisting of both austenitic and ferritic grains that gives them a combination of attractive properties.
Stainless Steels. Duplex stainless steels are based around a composition of 22% chromium, whereas super duplex stainless steels are based around a composition of 25% chromium. By increasing the chromium content, the level of pitting corrosion resistance is also increased. However, in order to retain the favourable balance of austenitic and ferritic microstructures, it is also necessary to increase the New Guide to Duplex and Super Duplex Stainless Steels - BlogApr 16, 2020 · As a super duplex stainless steel, the SAF2507 combines the desirable aspects of both austenitic and ferritic grades. The higher chromium, molybdenum and nitrogen contents result in a Pitting Resistance Equivalent number (PREN) of >41, providing pitting and crevice corrosion resistance superior to austenitic and duplex stainless steels in almost all corrosive media, and a Critical Pitting