A container, in particular a container with a tube-shaped wall, made of a light metal alloy for use as a reaction chamber in a process for manufacturing wafers. The container wall is made by way of extrusion or ring-rolling, and the container wall is made from a metallic, aluminum-based material with a magnesium content between 1.2 and 2.0 wt. %. The elements Cu, Fe, Si are present in amounts less than 0.5 wt. %. This container wall may also be shaped in one piece as container with a base plate.