| Method | Description | |--------|-------------| | | Many hold ASTM volumes or provide online access via ASTM Compass. | | Company subscription | Some NDT departments purchase individual standards. | | Interlibrary loan | Request the hardcopy or a scan limited to reference photographs (fair use for evaluation). | | Used bookstores | Rare; older editions with photographs might appear (check for copyright restrictions). |
These reference photographs serve as a bridge between the manufacturer and the purchaser. When dry powder magnetic particle inspection reveals an indication, it is compared to these standard plates to establish a graded level of severity and determine whether the casting meets agreed-upon acceptance criteria. astm e125 reference photographs pdf free download