HEAT-RESISTANT AUSTENITIC STAINLESS STEEL HIGHLY INHIBITED FROM RELEASING SCALE, AND STAINLESS-STEEL PIPE

摘要

This heat-resistant austenitic stainless steel has a specific composition containing Ce and Zr and has an Hv1/Hv0 ratio of 1.20 or higher, where Hv1 is the average hardness of the area ranging from the surface to a thickness-direction depth of 50 µm and Hv0 is the average hardness of the thickness-direction central part.