Alloys or metallic compositions – Ferrous – Nine percent or more chromium containing
Reexamination Certificate
2005-06-14
2005-06-14
Johnson, Christina (Department: 1725)
Alloys or metallic compositions
Ferrous
Nine percent or more chromium containing
C420S040000, C420S079000, C420S083000, C420S129000, C502S439000, C502S355000
Reexamination Certificate
active
06905651
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.
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Johansson Simon
Rogberg Bo
Burns Doane Swecker & Mathis L.L.P.
Johnson Christina
Sandvik AB
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