Some Aspects of the Influence of Manganese in Austenitic Stainless Steels

Abstract

Abstract The effect of Mn on the pitting corrosion resistance of 18 8 steels is due to its sulphide forming ability, because the sulphides are then present as non‐metallic inclusions. As is shown by the authors that reduction of the manganese content of these steels (from normally 1.8% to values around 0.2) gives rise to a considerable improvement of the corrosion behaviour. The pitting potential is then displaced toward considerably higher values while no negative aspect is noted on a weldability and no increase of the ferrite content in the ascast and as‐rolled conditions is experienced.