Patent ID: 8226780
Filing Date: 2012-07-24
Classification: C21D,C22C

Abstract:
1. A ferrite-austenite stainless steel sheet having excellent ridging resistance and workability, the steel sheet comprising: in terms of mass %, C: 0.1% or less; Cr: 17 to 25%; Si: 1% or less; Mn: 3.7% or less; N: 0.06% to less than 0.15%, and a balance of Fe and unavoidable impurities; wherein the steel sheet has a two-phase structure consisting of a ferrite phase and an austenite phase, a volume fraction of the austenite phase is in a range of 15 to 70%, and in a sheet plane (ND) of a center of a sheet thickness, grains of the ferrite phase having a crystal orientation satisfying ND//{111}±10° and grains of the ferrite phase having a crystal orientation satisfying ND//{101}±10° are present in a total amount of 10% by area or more.