FERRITIC STAINLESS STEEL AND USE THEREOF IN THE MANUFACTURE FOR HIGH TEMPERATURE RESISTANT PRODUCTS

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Ferritic stainless steel, comprising the following Chemical elements expressed in percentage by weight : - Cr 14.0-20.0 - Al 0.50-1.50 - Zr 0.10-0.50 - Si 0.30-1.50 - Ti 0.10-0.35 - Nb 0.25-0.55- C 9 (%C + %N) and substantially iron q. s. to 100. This steel may also comprise Yttrium and/or rare earth elements in a percentage by weight comprised in the range 0.10-0.30. The invention also encompasses products manufacturable with the steel of the invention, in particular vehicle exhaust manifold systems. Figure (I) shows a cyclic oxidation test carried out at 1000·C on samples having the composition of an embodiment of the steel according to the invention.