Tube sheet for exhaust gas heat exchanger

The invention relates to a tube sheet of stainless steel for exhaust gas heat exchangers having punched openings for receiving tube ends of a tube bundle, the openings preferably have a rectangular cross section and are arranged like a grid leaving a web width b. DOLLAR A It is suggested that the openings (6) each have a shear surface produced by stamping (10) have the height h to which a chamfer (11, 13) of the depth t adjoins made prior to stamping, and in that the height h is approximately the web width is equal to or less.