Patent ID: 7799734

Claim:
A welded or high temperature brazed catalyst carrier body for use in an exhaust system close to an internal combustion engine, the catalyst carrier body comprising: an inlet side for a gas stream; an outlet side for the gas stream; at least one metallic sheet disposed between said inlet side and said outlet side, said at least one metallic sheet having a sheet thickness of at least 30 μm, said at least one metallic sheet having at least a proof stress R p0.2 of 75 N/mm 2 at a temperature of 900° C., said at least one metallic sheet being formed of an iron material having nickel as a largest alloying constituent, said nickel alloying constituent being present in a range of from 30% by weight to 34% by weight, and a chromium alloying constituent being present in a range of from 18% by weight to 22% by weight; a multiplicity of passages through which the gas stream can flow, said passages being formed by said at least one metallic sheet and extending next to one another between said inlet side and said outlet side; and a device at least for maintaining or generating a turbulent flow of the gas stream through said passages.