Coated ferrite stainless steel sheet usable in the automobile exhaust sector
AssigneeUsinor
InventorsLaurent Antoni, Raphael Craen
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Abstract
Dip-coated ferrite stainless steel sheet usable in the automobile exhaust sector, characterized in that it comprises a steel core with the following composition by weight: 10.5%≦chromium≦20% 0%≦aluminum≦0.6% 0.003%≦carbon≦0.06% 0.003%≦nitrogen≦0.04% 0%≦silicon≦0.6% 0%≦manganese≦0.6% 0%≦sulfur≦0.002% iron and impurities inherent in processing, and a metal coating deposited by dipping the strip in a molten metal bath containing in particular aluminum and at least one rare earth element: cerium, lanthanum, praseodymium, neodymium, mixed metal and/or yttrium.
Claims16
Dip-coated ferrite stainless steel sheet usable in the automobile exhaust sector, characterized in that it comprises a steel core with the following composition by weight:
- 10.5%≦chromium≦20%
- 0%≦aluminum≦0.6%
- 0.003%≦carbon≦0.06%
- 0.003%≦nitrogen≦0.02%
- 0%≦silicon≦0.6%
- 0%≦manganese≦0.6%
- 0%≦sulfur≦0.002% iron and impurities inherent in processing, and a metal coating deposited by dipping the strip in a molten metal bath containing, in particular, aluminum and at least one rare earth element:
- cerium, lanthanum, praseodymium, neodymium, mixed metal and/or yttrium.
Ferrite stainless steel strip containing aluminum usable in particular as an auto exhaust catalyzer support characterized in that it has the following composition by weight:
- 10.5%≦chromium≦20%
- 0%<aluminum≦8.0%
- 0.003%<carbon≦0.06%
- 0.003%≦nitrogen≦0.02%
- 0%≦silicon≦0.6%
- 0%≦manganese≦0.6%
- 0%≦sulfur≦0.002%
- 0.001%≦rare earth, Ce, La, Pr, Nd, mixed metal and/or yttrium, taken alone or in combination≦1.0% iron and impurities inherent in processing and in which the chromium and aluminum levels conform to the relationship Cr/%Al<5.
Dependencies are inferred from the claim text.