Patent ID: 7083860

Claim:
A metallic honeycomb body, comprising: an axial length, a partial volume covering at least 55% of said axial length, a radial dimension of at least 20 mm, an inflow end side and an outflow end side; sheet-metal layers being corrugated for permitting a fluid to flow through the honeycomb body in a flow direction from said inflow end side to said outflow end side, said sheet-metal layers each having a surface area, partial regions, edges at said end sides, and corrugation peaks and corrugation valleys defining a structure width; each of said sheet-metal layers having a multiplicity of holes formed at least in said partial regions in said partial volume, said holes interrupting each said corrugation peak or said corrugation valley with at least one hole over said axial length; each of said holes having a hole surface area of between 5 and 120 mm 2 ; said sheet-metal layer surface area in said partial volume being reduced by 30 to 80% by said holes as compared to a sheet-metal layer without holes; and said partial volume being disposed at a distance from each of said end sides, preventing said holes from touching and from cutting through said edges of said end sides of said sheet-metal layers.