ASTM D638 (Tensile Properties)

ASTM D638 is a standardized test used to measure the tensile properties of plastics, which means how they stretch and break when pulled. A flat, standardized plastic sample is pulled gradually until it fractures. The test records the maximum force it withstands (tensile strength), how much it stretches (elongation), and how stiff or flexible it is (modulus). These measurements help determine the material’s suitability for various applications, ensuring quality and performance consistency in products made from plastics.