Stamped steel is excellent on manufacturability, warpage, and speed of manufacturing included. The industry after all spent a century working with it. Alumini

Stamped steel is excellent on manufacturability, warpage, and speed of manufacturing included. The industry after all spent a century working with it. Aluminium alloys bring along own problems, but otherwise unbeatable on weight even if very weight inefficient methods are used, like casting. It's a very complicated compromise even if economics is not involved.