What happens to austenitic stainless steel when it is deformed? Stainless Steels
Austenitic stainless steels will work-harden when deformed, fabricated or drawn resulting in a significant increase in their yield strength and an associated drop in their elongation. This cold work will convert a small part of the austenitic microstructure to martensitic, which has magnetic properties. Therefore, parts of an austenitic component may appear as magnetic, particularly on corners and edges where the level of deformation is higher.