A ferritic stainless steel alloy useful as a substrate for catalytic converter
material consists of, by weight: 15-21% Cr, 8-12% Al, 0.01-0.09% Ce, 0.02-0.1%
total of REM, and possible minor amounts of further elements, other than the ones
mentioned, the balance being Fe with normally occurring impurities. These alloys
have managed to combine a high content of Al with a good hot and cold workability.
