for different types of defects, where Level 1 represents the highest quality (lowest severity) and Level 8 represents the highest degree of allowable discontinuity. These levels are categorized by casting thickness—typically
Note: For levels 5–8, discontinuities often consist of multiple smaller defects, making single-defect measurement difficult. astm e155 porosity levels pdf repack
If you have ever argued with a supplier over whether a porosity indication is “minor scattered” or “severe cluster,” you know the value of a standard. The ASTM E155 document is the Bible of casting discontinuities. This specific repack of the Porosity Levels section (Volume I) takes a clumsy, expensive, museum-piece bound set of plastic plates and transforms it into a usable, modern workflow tool. It is not perfect (digital will never fully replace film), but for 95% of QA/QC applications, this repack is a game-changer. for different types of defects, where Level 1
standard provides reference radiographs used to evaluate the severity of discontinuities, such as porosity and shrinkage, in aluminum and magnesium castings. David Publishing Discontinuity & Porosity Levels ASTM E155 defines 8 levels of severity The ASTM E155 document is the Bible of