For aluminum and magnesium castings, ASTM E155 defines for porosity:
Note: While digital PDF repacks are highly efficient for quick reference, field training, and engineering meetings, official certification and final quality sign-offs must always be conducted using calibrated, licensed ASTM reference radiographs to ensure compliance with international auditing bodies. How to Apply ASTM E155 Porosity Data in Quality Control astm e155 porosity levels pdf repack
represents the lowest permissible level of discontinuity (highly strict, often required for critical aerospace structural components). For aluminum and magnesium castings, ASTM E155 defines