STP 1413 is one of the most complete assemblies of papers on the characterization of the mechanical properties of structural films available to date. In the rapidly developing field of structural films, this new ASTM publication is a milestone in the engineering of these materials systems and their characterization. 22 papers cover four major areas of structural films characterization: • Fracture and Fatigue • Elastic Behavior and Residual Stress • Tensile Testing • Thermomechanical, Wear, and Radiation Damage