Automakers Harness New Aluminum Technology: Welding allows engineers to join dissimilar materials

摘要

To meet federally mandated fuel economy standards, automakers must dramatically reduce vehicle weight. As a result, engineers are using more and more aluminum for body panels, engine components and structural parts. Aluminum use in vehicles is expected to double by 2025, as automakers roll out a wide variety of lighter weight models. The material offers many advantages over steel. For instance, one kilogram of aluminum can replace two kilograms of steel.