FERRITIC STAINLESS STEEL SHEET FOR EGR COOLERS

摘要

Disclosed is a ferritic stainless steel sheet for EGR coolers, which is characterized by containing at least, in mass%, not more than 0.03% of C, not more than 0.05% of N, not less than 0.1% but not more than 1% of Si, not less than 0.02% but not more than 2% of Mn, not less than 0.2% but not more than 1.5% of Cu, not less than 15% but not more than 25% of Cr, not less than 8(C + N)% but not more than 1% of Nb, and not more than 0.5% of Al, with the balance made up of Fe and unavoidable impurities.  The ferritic stainless steel sheet is also characterized in that Ti is further contained therein in an amount satisfying formulae (1) and (2) in mass%, and that the amounts of Cr and Cu are within the ranges satisfying formula (3). Ti - 3N = 0.03     (1) 10(Ti - 3N) + Al = 0.5     (2) Cr + 2.3Cu = 18     (3)