ASTM E 192 - 95. Standard Reference Radiographs for Investment Steel Castings of Aerospace Applications

American Society for Testing and Materials (ASTM). 1995, 3 pages.
These reference radiographs illustrate various types and degrees of discontinuities occurring in thin-wall steel investment castings. They are intended to provide the following:
A guide enabling recognition of thin-wall steel casting discontinuities and their differentiation both as to type and degree through radiographic examination.
Example radiographic illustrations of discontinuities and a nomenclature for reference in acceptance standards, specifications and drawings.