PROBLEM TO BE SOLVED: To provide an excellent ferritic stainless steel having improved high temperature strength in the range of 800°C or more, performance in a high temperature oxidation resistance equal to or more than existing ferritic stainless, particularly satisfying requirements for thermal efficiency improvement and life elongation of a heat exchanger for a recuperator which is a recuperating device.SOLUTION: There is provided the ferritic stainless steel containing, by mass%, C:0.04% or less, Si:0.40 to 1.20%, Mn:0.01 to 0.40%, Cr:15.00 to 22.00%, Al:0.60 to 1.40%, N:0.03% or less, Nb:0.10 to 0.90%, Ti:0.10 to 0.90%, and the balance Fe with inevitable impurities, and satisfying relationships of (Si+Al):1.00 to 2.60% and 4(C+N)≤(Ti+Nb)≤1.60%. and having a Laves phase of 0.2 vol.% or more in the steel.
