A metallic carrier for a catalytic converter or particle separator and the use of a metallic carrier for exhaust gas cleaning of internal combustion engines, especially diesel engines, is provided. The metallic carrier comprises an aluminum alloy having an aluminum content of 75 to 99.5 percent by mass. The metallic carrier helps achieve an advantageous reduction in the mass of the carrier and thermal capacity, as a result of which the light-off temperature is reached more rapidly. The reduction of mass and thermal capacity is not at the expense of a reduction in the catalytic carrier surface.