: The resulting radiograph is visually compared against the ASTM E155 reference radiographs. The inspector identifies which severity level most closely matches the appearance of discontinuities in the casting.
Understanding how porosity levels are classified, what a "repack" documentation implies, and how to utilize PDF reference charts is essential for maintaining strict structural integrity. What is ASTM E155?
| Porosity Type | Max Allowable Level (Class A) | |---------------|-------------------------------| | Fine (Gas) Porosity | Level 2 | | Coarse Porosity | Level 1 | | Isolated Gas Hole | Level 2 | | Cluster Gas Hole | Level 1 | astm e155 porosity levels pdf repack
: This contains the scope, definitions, application guidance, and reference information—typically 5 pages in length for the current version. This document alone does NOT contain the reference images.
: The casting is radiographed using established radiographic techniques (typically following ASTM E94 guidelines). : The resulting radiograph is visually compared against
The standard also addresses discontinuities caused by foreign materials:
The Transition to Digital: PDF and Digital "Repack" Reference Formats What is ASTM E155
While "repack" documents on third-party sites can assist with training or quick reference, they should not replace the official, calibrated reference radiographs required for official inspection and sign-off. Conclusion
remains the benchmark for evaluating cast alloy integrity. By understanding the 8 levels of porosity and utilizing available reference materials, companies can ensure that their aluminum and magnesium castings meet the highest standards of safety and performance.