One-shell spring suspension arm

A one-shell spring suspension arm formed of sheet metal for a wheel suspension of a motor vehicle, comprising a first end section for connection to a chassis carrier, a second end section for wheel-side connection, and a width-expanded section for supporting a spring, which is arranged between the two end sections and defines a trough having upwardly projecting flanks, wherein a spiral is integrally formed in the width-expanded section as a spring seat, wherein a connection section for connecting a shock absorber is formed between the spiral and the second end section, wherein the spiral is formed in such a way that the lower point thereof is in an angular range of at most 90°, the angle bisector of which extends perpendicular to the longitudinal central axis of the spring suspension arm, wherein the spiral surrounds an opening at which an inwardly projecting collar is formed, wherein the sheet metal of the spring suspension arm has a yield point of at least 500 MPa, and wherein a section of the spiral comprises an arc-shaped bead which starts at a distance in space from the lowest point of the spiral and extends towards the highest point of the spiral.