Marine Corrosion of Stainless Steels (EFC 33) PDF

ABSTRACT

A Collaborative TestingProgramme has been conducted to map differences in sea water corrosivity towards stainless steel among European laboratories. The sea water varied from brackish to full strength ocean water. The test comprised monitoring of free corrosion potential and the reduction current of UNS 531254,crevice corrosion testing of three different stainless steel qualities, comparison of critical pitting temperature of UN5 531600and monitoring ofsea water parameters. Potential ennoblement and increase in the reduction current were observed at all the test stations involved during both seasons. The rate of the anodic reaction in the stable pitting process was practically independent of the sea water composition. The tendency towards initiation of crevice corrosion was found to differ significantly among the test stations involved, which is difficult to explain based on data available on chemical, physical properties and biological effects.

Edited by: Damian Féron