ASTM D638-14 pdf free.Standard Test Method for Tensile Properties of Plastics. ASTM D638 covers the determination of the tensile properties of unreinforced and reinforced plastics in the form of standard dumbbell-shaped test specimens when tested under defined conditions of pretreatment, temperature, humidity, and testing machine speed. ASTM D638 is designed to produce tensile property data for the control and specification...