Which metal is most susceptible to denting: aluminum, steel, or wrought iron?

When comparing aluminum, steel, and wrought iron, aluminum is the most susceptible to denting due to its softer and more malleable nature. Steel, especially high-strength alloys, offers better dent resistance, while wrought iron, though softer than steel, is less prone to dents than aluminum due to its fibrous grain structure. Factors like thickness and treatment also play a role, but overall, aluminum dents most easily under impact.