Ferritic stainless steel plate with excellent brazing, heat exchanger, ferritic stainless steel plate for heat exchanger, ferritic stainless steel, ferritic stainless steel for fuel supply system members, and fuel supply system parts

摘要

One aspect of this ferritic stainless steel sheet is mass%, C: 0.03% or less, N: 0.05% or less, Si: 1% or less, Mn: 1.2% or less, Cr: 14% or more 28 % Or less, Nb: 8 (C + N) or more and 0.8% or less, and Al: 0.1% or less, with the balance being Fe and inevitable impurities, and a film satisfying Formula 1 is formed on the surface. . df × Crf + 5 (Sif + 3Alf) ≦ 2.0 (Formula 1) df indicates the thickness (nm) of the coating, Clf indicates the Cr cation fraction in the coating, and Sif indicates the Si cation fraction in the coating. Alf represents the Al cation fraction in the film.