This standard specifies the test methods for the mechanical melting point of aluminum alloys, specifically applicable to performance testing and parameter optimization during thermal processing such as welding, heat treatment, casting, and forging of aluminum alloy sheets or profiles. Based on its described characteristics and in accordance with general practices for testing the mechanical properties of similar materials, conducting this test typically requires analytical instruments capable of precise temperature control and mechanical loading. Equipment meeting these requirements mainly includes thermomechanical analyzers or dynamic thermomechanical analyzers. Such instruments can accurately measure changes in the dimensions or modulus of materials (such as aluminum alloys) with temperature under programmed temperature control, thereby providing critical melting point data references for related thermal processing techniques.