CORROSION RESISTANCE OF AM STAINLESS STEEL

Corrosion of Stainless Steels (SS), including the austenitic Fe-Cr-Ni alloys, is associated with Manganese (II) Sulfide (MnS) inclusions that provide local sites for corrosion pits.

The Hub research found that an austenitic stainless steel (type 316L) manufactured through selective laser melting (SLM) was able to be produced without MnS inclusions and hence with no accompanying Chromium (Cr) depletion in the vicinity of MnS.

This results in superior corrosion resistance relative to wrought 316L SS. There is considerable potential to design high corrosion resistant alloys across numerous alloy classes.