Doing something the right way often results in multiple benefits. Case in point: going from steel to high-strength, military-grade , aluminum alloys in the F-150 body and bed. Hardening aluminum alloy through heat-treating produces greater strength. Working with aluminum alloy also allows engineers to increase gauge (or thickness) where needed to achieve extra strength without increasing weight. The stronger F-150 weighs up to 700 pounds less than the previous generation, resulting in greater power-to-weight ratio, enhanced fuel efficiency, plus higher max payload and tow ratings that are best-in-class.