Elongation at Break

Elongation at Break is a key indicator of a material's mechanical properties, referring to the percentage ratio of the elongation of the gauge length at the moment of rupture to the original gauge length. It reflects the toughness and ductility of the material; the higher the value, the less prone the material is to brittle fracture. In foreign trade, this term is commonly found in specifications, quality inspection reports, and contract clauses for products such as rubber, plastics, textiles, adhesives, and metal wires. Usage scenarios include: customers requesting physical property parameters during inquiries, agreeing on quality indicators when signing contracts, and serving as a basis when handling quality disputes. Note: Different testing standards (e.g., ASTM D412, ISO 37) may lead to differing results, so the standard must be clearly specified in the contract; Elongation at Break is different from terms such as tensile strength and modulus—the former characterizes ductility, while the latter characterize strength or stiffness. Foreign trade practitioners should ensure that the test reports provided by suppliers comply with the standards of the importing country to avoid disputes caused by inconsistent testing methods.