Patent ID: 8980018
Filing Date: 2015-03-17
Classification: C21D,C22C

Abstract:
1. A ferritic stainless steel sheet excellent in heat resistance and workability, comprising, by mass %, C: less than 0.010%, N: 0.020% or less, Si: over 0.1% to 2.0%, Mn: 0.28 to 2.0%, Cr: 12.0 to 25.0%, Cu: over 0.9% to 2.0%, Ti: 0.05 to 0.3%, Nb: 0.001 to 0.1%, Al: 1.0% or less, and B: 0.0003 to 0.0030%, having a content of Cu, Ti, and Nb satisfying Cu/(Ti+Nb)≧5, and having a balance of Fe and unavoidable impurities, wherein the steel sheet has a 0.2% yield strength at 700° C. after 700° C.×100 hours aging of the steel sheet of 39 MPa or more.