Astm E155 Porosity Levels Pdf Repack

Understanding ASTM E155 Porosity Levels: A Comprehensive Guide

Common Mistakes When Interpreting Porosity Levels

Table 1 – Minimum Severity Levels for Class A Castings (Aluminum)

• The ASTM E155 standard is limited to aluminum and aluminum alloy castings.
• The repack process assumes that the reference radiographs are representative of the porosity levels in the castings.

To perform an inspection, a full set of entity plates (actual physical radiographs) must be purchased from ASTM International for visual comparison. Digital Standards: astm e155 porosity levels pdf repack

Frequently Asked Questions (FAQ)

Level 1

| Level | Description | Typical Disposition | |-------|-------------|----------------------| | | Very fine, widely scattered pores – barely detectable under standard viewing conditions. | Always acceptable for most applications. | | Level 2 | Small pores, still scattered but more frequent. | Acceptable for general commercial use. | | Level 3 | Moderate pore size and frequency. The "gray area" – often requires engineering review. | Acceptable only with reduction factors. | | Level 4 | Coarse pores, frequent clustering, measurable loss of section integrity. | Usually rejectable for structural parts. | | Level 5 | Severe porosity – gross discontinuities visible without viewers. | Unacceptable for all but the lowest-grade castings. | The ASTM E155 standard is limited to aluminum

ASTM E155 is a standard test method for "Porosity in Aluminum and Aluminum Alloy Castings." The standard provides a series of reference images and descriptions for categorizing porosity levels in aluminum and aluminum alloy castings. To perform an inspection, a full set of