A suspension component for a vehicle includes a cast iron body, a high
strength steel tube and an adapter ring. The adapter ring includes a
protrusion engaged with a face of the cast iron body. The protrusion is
heated to a plasticized state as a capacitor is discharged through the
protrusion and the face. The adapter ring is welded to the body upon
cooling of the adapter ring. The high strength steel tube is fixed to the
adapter ring.