Search International and National Patent Collections
|1. (WO2018043565) AUSTENITIC STAINLESS STEEL|
|Applicants:||NIPPON STEEL & SUMITOMO METAL CORPORATION
|Title:||AUSTENITIC STAINLESS STEEL|
Provided is an austenitic stainless steel which exhibits excellent polythionic acid SCC resistance and excellent creep ductility. An austenitic stainless steel according to the present embodiment has a chemical composition which contains, in terms of mass%, 0.030% or less of C, 0.10-1.00% of Si, 0.20-2.00% of Mn, 0.040% or less of P, 0.010% or less of S, 16.0-25.0% of Cr, 10.0-30.0% of Ni, 0.1-5.0% of Mo, 0.20-1.00% of Nb, 0.050-0.300% of N, 0.0005-0.100% of sol.Al and 0.0010-0.0080% of B, with the remainder comprising Fe and impurities, and which satisfies formula (1). B+0.004-0.9C+0.017Mo2 ≥ 0 (1) Here, the atomic symbols in formula (1) are substituted by the content (mass%) of the corresponding element.