Astm E155 Porosity Levels Pdf Repack ((better)) Jun 2026

Porosity appearance changes on an X-ray depending on the thickness of the metal being scanned. ASTM E155 accounts for this by dividing reference radiographs into distinct material thickness brackets: Castings with thicknesses up to and including Volume II: Castings with thicknesses over Understanding "PDF Repack" Documentation

What (aluminum or magnesium) are you casting? What is the wall thickness of your component?

For further reading, refer to ASNT’s Handbook on Radiographic Testing or contact ASTM International directly regarding digital licensing for E155.

Below is a suitable for a technical summary, repository description, or internal quality documentation. astm e155 porosity levels pdf repack

: Evaluation is typically done within a 2-by-2 inch (51 by 51 mm) unit area.

: Each reference plate illustrates discontinuities within a 2-by-2-inch area. The evaluation is performed on comparable areas of the casting radiograph.

Mixing up Al and Mg plates – magnesium absorbs radiation differently. Fix: Your repack must clearly label material type on each page. Porosity appearance changes on an X-ray depending on

To effectively utilize ASTM E155 porosity data within a manufacturing pipeline, quality assurance teams follow a structured inspection workflow:

In the context of ASTM E155, porosity is generally categorized by how it appears on a radiograph.

The guide uses a set of physical reference plates (radiographs) that show varying degrees of severity for specific defects. In a typical inspection, a technician compares a live X-ray of a casting to these standard levels to determine if the part is "pass" or "fail" based on the project's engineering requirements. For further reading, refer to ASNT’s Handbook on

If the porosity in the production casting is equal to or less severe than the maximum allowable level specified in the engineering blueprint, the part passes. If it exceeds that level, it is flagged for scrap or weld repair.

: For castings with varying discontinuity severity across different regions, the standard provides guidance on whether to evaluate each region individually or perform a comprehensive assessment.

: The inspector overlays or places the production radiograph side-by-side with the ASTM E155 reference images.

ASTM E155 categorizes porosity and related defects based on their radiographic appearance: