Compression degrades fine image details, making it impossible to accurately judge subtle particle accumulations.
Record the severity degree based on the matching photograph.
The standard provides a visual dictionary of various surface and near-surface discontinuities. By comparing actual magnetic particle indications on a component to these standardized photographs, inspectors can accurately grade the severity of a defect. This process determines whether a casting meets industry acceptance criteria. The Core Reference Categories
The casting is accepted or rejected based on pre-defined engineering contract specifications (e.g., "Category I defects must not exceed Severity Level 2"). Digital Procurement: The "ASTM E125 PDF" Astm E125 Reference Photographs Pdf
provide helpful guides on how these photographs are utilized for NDE (Non-Destructive Examination) performance. Steel Founders’ Society of America specific acceptance levels typically used in commercial casting contracts? AI responses may include mistakes. Learn more ASTM E 125 Reference Photographs Guide | PDF - Scribd
– Gas holes or pinholes appearing as clusters of rounded indications. The PDF vs. Original Reference Photographs
: It is important to note that severity degrees are not equivalent across different types; for example, a Degree 3 for Type I is not the same as a Degree 3 for Type II. Inspection Method By comparing actual magnetic particle indications on a
Quality auditors routinely check the calibration dates and authenticity of reference standards. Using an unauthorized digital copy can fail an audit.
The technician compares the size, density, and length of the indication against the graded reference photographs within that specific category.
This dual-color approach ensures that the photographs are effective regardless of the technique used in actual inspections. Digital Procurement: The "ASTM E125 PDF" provide helpful
The ASTM E125 is often part of a broader framework of standards for casting quality. For example, it is a referenced document in standards like (Investment Castings) and ASTM A781/A781M (General Requirements for Steel Castings). It is also closely related to other NDT standards, such as ASTM E709 (the guide for magnetic particle testing itself) and ASTM E165 (the standard for liquid penetrant inspection).
Each category typically includes five "degrees" of severity, with being the least severe and Degree 5 being the most severe. 📖 How to Use the Reference Photos
ASTM E125 divides indications into five distinct types of discontinuities, plus two additional unique categories. Each category contains various degrees of severity, typically ranging from 1 (least severe) to 5 (most severe). Type I: Linear Discontinuities