Yes, leaf springs are typically made of high carbon steel. High carbon steel is well-suited for applications that require high strength and resilience, such as automotive leaf springs. Leaf springs are used in vehicle suspensions to absorb and distribute the impact and weight of the vehicle, providing a smoother ride and stability. The high carbon content in the steel allows the leaf springs to withstand the heavy loads and constant flexing without permanent deformation or breakage. The specific grade of high carbon steel used for leaf springs can vary, but common examples include AISI 5160 or 9260, which are specifically formulated for their excellent spring properties and durability.