Improving Materials Qualification and Design against HISC of Duplex and Super Duplex Stainless Steels
Status: Completed
Date Announced: September, 2009
Project reference: 20418
Failures of subsea duplex and superduplex stainless steel due to hydrogen induced stress cracking (HISC) led TWI to quantify the resistance of such materials to HISC. These data were incorporated into DNV Recommended Practice RP-F112 Design of duplex stainless steel subsea equipment exposed to cathodic protection but concerns with regard to the future integrity of duplex/superduplex subsea structures remain.