Patent ID: 7806993
Filing Date: 2010-10-05
Classification: C21D,C22C

Abstract:
1. A ferritic stainless steel having a composition, on a % by mass basis, comprising: C: 0.02% or less; Si: 2.0% or less; Mn: 2.0% or less; Cr: from 12.0 to 20.0%; Mo: from 1.0 to 5.0%; W: 3.5% to 5.0%; wherein the total content of Mo and W: (Mo+W)≧4.5%, Nb: 0.4 to 0.7%, N: 0.02% or less, V in an amount up to 0.5% and Fe and inevitable impurities as residual, and having a proof stress at 900° C. of 20 MPa or more.