Ensure you are comparing your production radiograph against the correct thickness column in the ASTM standard (e.g., 1/4 inch, 3/4 inch, etc.).
"ASTM E155, E505 and E2422 only classify and grade the various defects of castings, but do not specify the specific acceptance grade at the time of acceptance." astm e155 porosity levels pdf repack
Try searching the physical book for “Shadowgraph vs. Actual.” You can’t. In this PDF repack, Ctrl+F finds every mention of “interference,” “density,” and “aluminum alloy 356.” The appendix (which most people ignore) becomes usable. Ensure you are comparing your production radiograph against
These images serve as visual comparators. Inspectors compare production radiographs of castings against these official standards to determine the severity of specific casting flaws. Key Capabilities of the Standard In this PDF repack, Ctrl+F finds every mention
Non-Destructive Testing (NDT) / Aerospace Quality Control
Porosity appearance changes on an X-ray depending on the thickness of the metal being scanned. ASTM E155 accounts for this by dividing reference radiographs into distinct material thickness brackets: Castings with thicknesses up to and including Volume II: Castings with thicknesses over Understanding "PDF Repack" Documentation
A typical engineering drawing will specify the allowable defect level using a notation such as: