ASTM occasionally offers a "Reading Room" on their website where users can view certain standards for free in a read-only format (no downloading or printing).
While excerpts and summaries are often available through academic portals, the complete official standard (including the high-resolution reference radiographs) is a copyrighted document: Free Download Astm E155 Pdf
ASTM E155 is the standard reference for inspecting aluminum and magnesium castings. It provides a visual baseline for identifying gas holes, porosity, and inclusions using radiographic imaging. ASTM occasionally offers a "Reading Room" on their
No. ASTM sells the standard as a complete set. However, some third-party distributors offer individual plates at a lower cost, but be careful about authenticity. but be careful about authenticity.