Subframe for a motor vehicle, comprising - at least three beams (3, 4, 6, 7), of which, in the assembled state of the subframe, at least two beams (3, 4) extend at a distance from one another, substantially along the longitudinal axis of the motor vehicle and at least one beam (6, 7) extends transversely to the longitudinal axis of the motor vehicle, at least one of the beams (3, 4, 6, 7) being an extruded beam (3, 4), and - at least one cast node (9, 10, 11, 12) of aluminium, magnesium or an alloy based on aluminium and/or magnesium, the cast node (9, 10, 11, 12) connecting the extruded beam (3, 4) and at least one of the other beams (6, 7) to another, wherein the cast node (9, 10, 11, 12) has an arm-shaped beam connecting element (9.4, 10.4, 11.4, 12.4), wherein the extruded beam (3, 4) overlaps the beam connecting element (9.4, 10.4, 11.4, 12.4), and wherein the extruded beam (3, 4) is connected to the beam connecting element (9.4, 10.4, 11.4, 12.4) by a weld seam, characterised in that the cast node (9, 10, 11, 12) has on the beam connecting element (9.4, 10.4,11.4, 12. 4) a shoulder which defines a shoulder end face, wherein the shoulder end face on the one hand and the extruded support (3, 4) and/or the weld seam on the extruded beam (3, 4) on the other hand define a groove-shaped or trench-shaped recess, whose width or average width is at least 2.5 times, preferably at least 3.5 times, particularly preferably at least 4 times, the wall thickness (te) of the extruded beam (3, 4), and wherein the weld seam is designed as a lap welded joint. - at least three beams (3, 4, 6, 7), of which, in the assembled state of the subframe, at least two beams (3, 4) extend at a distance from one another, substantially along the longitudinal axis of the motor vehicle and at least one beam (6, 7) extends transversely to the longitudinal axis of the motor vehicle, at least one of the beams (3, 4, 6, 7) being an extruded beam (3, 4), and - at least one cast node (9, 10, 11, 12) of aluminium, magnesium or an alloy based on aluminium and/or magnesium, the cast node (9, 10, 11, 12) connecting the extruded beam (3, 4) and at least one of the other beams (6, 7) to another, wherein the cast node (9, 10, 11, 12) has an arm-shaped beam connecting element (9.4, 10.4, 11.4, 12.4), wherein the extruded beam (3, 4) overlaps the beam connecting element (9.4, 10.4, 11.4, 12.4), and wherein the extruded beam (3, 4) is connected to the beam connecting element (9.4, 10.4, 11.4, 12.4) by a weld seam, characterised in that the cast node (9, 10, 11, 12) has on the beam connecting element (9.4, 10.4,11.4, 12. 4) a shoulder which defines a shoulder end face, wherein the shoulder end face on the one hand and the extruded support (3, 4) and/or the weld seam on the extruded beam (3, 4) on the other hand define a groove-shaped or trench-shaped recess, whose width or average width is at least 2.5 times, preferably at least 3.5 times, particularly preferably at least 4 times, the wall thickness (te) of the extruded beam (3, 4), and wherein the weld seam is designed as a lap welded joint. the cast node (9, 10, 11, 12) connecting the extruded beam (3, 4) and at least one of the other beams (6, 7) to another, wherein the cast node (9, 10, 11, 12) has an arm-shaped beam connecting element (9.4, 10.4, 11.4, 12.4), wherein the extruded beam (3, 4) overlaps the beam connecting element (9.4, 10.4, 11.4, 12.4), and wherein the extruded beam (3, 4) is connected to the beam connecting element (9.4, 10.4, 11.4, 12.4) by a weld seam, characterised in that the cast node (9, 10, 11, 12) has on the beam connecting element (9.4, 10.4,11.4, 12. 4) a shoulder which defines a shoulder end face, wherein the shoulder end face on the one hand and the extruded support (3, 4) and/or the weld seam on the extruded beam (3, 4) on the other hand define a groove-shaped or trench-shaped recess, whose width or average width is at least 2.5 times, preferably at least 3.5 times, particularly preferably at least 4 times, the wall thickness (te) of the extruded beam (3, 4), and wherein the weld seam is designed as a lap welded joint.