Yes, many international standards emphasize proper alignment as part of the testing procedure. For instance, ISO 23788 is an international standard specifically for verifying alignment of (fatigue) testing machines, and ISO 6892 (metallic materials tensile testing) implies the need for axial loading to get valid results. DIN standards (German standards, often aligned with ISO) also incorporate alignment – for example, DIN EN ISO 7500-1 (for verification of test machines) and others ensure the machine’s force application is axial. While the exact methods can differ, the common theme is that machine alignment must be checked and kept within a tolerance. By using the alignment fixture, you’re essentially addressing these requirements proactively. It gives you confidence that whether it’s an ASTM, ISO, or DIN based test, your setup is within the accepted alignment criteria.