ASTM E 155. Standard Reference Radiographs for Inspection of Aluminum and Magnesium Castings

American Society for Testing and Materials (ASTM). 1995, 4 pages.
These reference radiographs illustrate the types and degrees of discontinuities that may be found in aluminum-alloy and magnesium-alloy castings. The castings illustrated are in thicknesses of 1⁄4 in. (6.35 mm) and 3⁄4 in. (19.1 mm).
This document may be used where no other applicable document exists, for other material thicknesses for which it has been found to be applicable and for which agreement has been
reached between the purchaser and the manufacturer.