Is superior corrosion-resistant the ferrite rustless steel null for the armor material

摘要

PURPOSE: To realize inexpensive ferritic stainless steel showing excellent corrosion resistance in an atmospheric environment and showing excellent performance as an exterior material without adding large amounts of expensive component thereto. ;CONSTITUTION: The componental compsn. of ferritic stainless steel is constituted of a one contg. ≤0.020% C, ≤0.3% Si, ≤0.5% Mn, 17.5 to 30% Cr, 1.5 to 3.5% Mo, ≤0.020% N, ≤0.030% P, ≤0.010% S, 0.2 to 1.0% Cu, ≤0.20% Ti and ≤0.50% Nb, and the balance substantial Fe as well as satisfying the inequalities of Ti+(Nb/2)≥10 (C+N) and 40≥Cr+4Mo≥28.;COPYRIGHT: (C)1994,JPO&Japio