: High-resolution JPEG files suitable for viewing on computers or printing. Standard Usage and Classification : These photographs act as a visual baseline for acceptance criteria agreed upon between manufacturers and purchasers.
. It provides a visual set of 31 reference photographs used to classify and interpret surface and near-surface discontinuities in ferrous castings when using the dry powder magnetic particle method. ASTM International Key Features and Plates The reference photographs are organized into four large charts
The ASTM E125 reference photographs are a set of standard images that depict various types of indications and artifacts that can be encountered during magnetic particle testing. These photographs are used to evaluate the sensitivity and performance of magnetic particle testing equipment and techniques. The reference photographs are presented in a PDF format, making it easy to access and use them.
To get a legitimate, high-resolution , you have three options via ASTM’s Compass portal:
To get a legitimate, high-quality version of the reference photographs, consider the following avenues: Astm E125 Reference Photographs Pdf
ASTM E125 is the standard reference for magnetic particle indications on ferrous castings. It provides a visual baseline for quality control, engineering, and inspection personnel to evaluate the severity of surface and near-surface discontinuities.
Chaplets are metal supports used to hold cores inside a mold. Chills are metal inserts used to speed up local cooling. If these components do not completely fuse with the molten pouring metal, they leave boundary lines that manifest as distinct geometric magnetic particle indications. Category V: Porosity
Engineering specifications and purchase orders often dictate a maximum acceptable severity level (e.g., "Linear discontinuities shall not exceed Severity Level 2 per ASTM E125"). Classification of Discontinuities in ASTM E125
These photographs establish a universal language between foundry workers, third-party inspection agencies, and end-use customers. By comparing a live indication on a casting to the reference photographs, an inspector can determine: : High-resolution JPEG files suitable for viewing on
: Relying on unauthorized, low-resolution digital copies can void your inspection validation during quality audits (e.g., ASNT, ASME, or ISO audits). Technical Specifications Summary Developing Organization ASTM International Primary Material Focus Ferrous castings (Steel and Iron) Testing Method Magnetic Particle Inspection (MPI) Severity Grading Scale Level 1 (Minor) to Level 5 (Major) Complementary Standards ASTM E709 (MPI Guide), ASTM E1444 (MPI Practice) Best Practices for Casting Inspections
Most categories are graded on a scale of 1 to 5, with 5 being the most severe.
The standard provides a visual dictionary of surface and near-surface discontinuities revealed by magnetic particle testing (MT). It establishes a common linguistic and visual baseline between foundries, testing labs, and end-user inspectors. Types of Discontinuities Documented in ASTM E125
ASTM E125 doesn't just show what a crack looks like; it provides a scale of severity. Benchmarking: It provides a visual set of 31 reference
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Indications showing internal voids caused by metal contracting during solidification. Inclusions: Non-metallic materials trapped within the casting.
Standard Reference Photographs for Magnetic Particle Indications on Ferrous Castings Dry Powder Magnetic Particle Inspection (MT) Material Ferrous Castings (Steel, Iron) Key Categories Linear, Shrinkage, Inclusions, Internal Chill Application Surface Inspection Conclusion
: The ASTM E125-63(2023) standard can be purchased, but the photographs are typically sold separately as an adjunct, notes GlobalSpec .
: The indication is classified based on its appearance (linear, shrinkage, etc.).
