Ferritic stainless steel alloy and its use as a substrate for catalytic converters
AssigneeSandvik AB
InventorsSimon Johansson, Bo Rogberg
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Abstract
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.
Claims12
A ferritic stainless steel alloy useful as a substrate for catalytic converter material comprising in percent by weight:
- 15-21% Cr, 8-12% Al, 0.01-0.09% Ce, 0.02-0.1% total of REM, the balance essentially being Fe.
A catalyst for exhaust gases from automobiles, wherein the substrate for the catalytically active material is made of a thin foil of ferritic stainless steel alloy.
Dependencies are inferred from the claim text.