These photographs are intended for comparison with actual magnetic particle indications found on production castings. They help manufacturers and purchasers agree on acceptance criteria for specific parts. How to Use ASTM E125 Reference Photographs
is a critical standard published by ASTM International. It specifically covers the types and degrees of discontinuities that can be revealed by the magnetic particle inspection method on ferrous castings.
Shrinkage occurs when the molten metal contracts as it solidifies, leaving voids or spongy areas within the casting. When these voids reach or sit just below the surface, they create distinct magnetic particle patterns. Astm E125 Reference Photographs Pdf
Implementing ASTM E125 in a real-world inspection workflow requires a systematic approach to avoid misinterpretation.
This dual-color approach ensures that the photographs are effective regardless of the technique used in actual inspections. These photographs are intended for comparison with actual
By respecting the precision of the reference photographs, you ensure that your ferrous castings meet industry standards, your inspections are defensible, and your products remain safe for service.
Acquiring the official ASTM E125 standard and its reference photographs is critical for compliance. The main source is the ASTM International website, where you can purchase the current active version, ASTM E125-63(2023), as a PDF download. The standard itself is typically a 3-page document. It specifically covers the types and degrees of
ASTM E125 is a standard reference blocks and photographs collection developed by ASTM International. It is officially titled