However, be aware: ASTM International does not officially sell a repack. They sell individual PDFs or the physical film set. Most labs create their own repack by scanning their licensed film set and assembling a PDF. This is legal only if you own the original standard.
Some NDT training schools offer study guides that include extracted, annotated versions of ASTM E155 porosity levels for educational purposes. These are not full standards but can serve as a quick-reference repack.
Understanding ASTM E155 Porosity Levels: A Comprehensive Guide astm e155 porosity levels pdf repack
Larger, more isolated, and distinct dark voids on the X-ray film.
Unauthorized redistribution of ASTM standards is copyright infringement. However, you can create your own personal repack legally if you purchase the standard from ASTM International or a reseller (like IHS Markit or Techstreet). However, be aware: ASTM International does not officially
: Typically indicative of structural weakness; usually rejected in all but non-load-bearing cosmetic applications. How Inspectors Use ASTM E155 Reference Radiographs
A is a user-curated, reorganized version of the official standard. A high-quality repack: This is legal only if you own the original standard
Provide side-by-side visual aids on the factory floor so NDT technicians can easily compare real-time X-ray results against accepted limits.
Summary Table: Typical Casting Classes vs. ASTM E155 Discontinuity Allowances Casting Class Criticality Typical Allowable Porosity Level Common Applications High stress, flight-critical Aircraft structural bulkheads, missile casings Class B High stress, non-flight critical Military vehicle components, high-pressure valves Class C Moderate stress, general utility Level 3 to 4 Automotive engine blocks, brackets, housings Class D Low stress, cosmetic/non-structural Level 5 to 7 Consumer goods, decorative covers, bases
: Always maintain active, licensed access to the official ASTM reference artifacts (whether physical film or official digital media) to present during quality system audits.
Understanding ASTM E155 Porosity Levels: A Complete Reference Guide