Duplex (austenitic/ferritic) stainless steels over properties of interest and a cost effective material selection solution for plant and equipment n the pulp and paper industry. The characteristics of duplex steels leading to successful long term applications of 22 Cr duplex and a copper containing 25 Cr super duplex stainless stee are reviewed. It is concluded that, applied correctly, twe-phase stairdess steels can provide long term reliable maintenance-free service in many pulp and paper plant environments.
Keyword: Duplex stainless steel, super duplex steel, duplex steel-copper containing, high strength stainless steel, acid corrosion, pitting corrosion, abrasion/erosion, stress corrosion, fatigue, pulp and paper.