The full standard consists of physical reference plates (radiographs) that show eight levels of severity for different defect types.
For digital radiography, professionals must refer to ASTM E2422 (aluminum) or ASTM E2869 (magnesium) rather than the physical films of E155. Porosity and Discontinuity Types
A new physical set of ASTM E155 costs upwards of $800-$1,200. A licensed digital repack (or even a well-done internal scan) is often a fraction of that. For a small job shop that only casts aluminum, buying the full physical set is overkill. Buying just the Porosity repack is efficient. astm e155 porosity levels pdf repack
Fragments of heavy metals (like tungsten or copper) that are denser than aluminum or magnesium, appearing as bright white spots on the X-ray. Decoding ASTM E155 Porosity Levels and Severity Grades
Comprehensive Guide to ASTM E155 Porosity Levels: Radiographic Standards and Reference Documentation The full standard consists of physical reference plates
Your is specific to aluminum and magnesium. Do not use it for steel.
A: Typically every 5-7 years. The latest active version as of 2025 is ASTM E155-20. Ensure your repack matches the active revision. A licensed digital repack (or even a well-done
These radiographs must be viewed on a high-intensity industrial X-ray viewbox.
Represented by tiny, round or elongated dark spots corresponding to minute voids, typically distributed throughout the entire casting. 3. Microshrinkage (Feathery Type)