GB/T 22638.11-2023 is Part 11 of the GB/T 22638 series of standards, which specifies the test methods for the tensile properties, cupping value, and bursting strength of aluminum foil. It applies to the mechanical performance evaluation of various types of aluminum foil at room temperature, covering categories such as aluminum foil for power batteries and pharmaceutical aluminum foil. The standard regulates sample preparation, test procedures, and result calculations, with the core objective of accurately measuring key indicators such as tensile strength and elongation, thereby providing a basis for product quality control. The tests require instruments such as an electronic universal testing machine, an extensometer, a specialized double-edged cutting tool, a cupping testing machine, and a bursting strength testing device to ensure testing accuracy and data consistency.