ASTM International

Standard Digital Reference Images for Inspection of Aluminum and Magnesium Die Castings
 N E2973

Annotation

These digital reference images illustrate various categories, types, and severity levels of discontinuities that may occur in aluminum-alloy and magnesium-alloy die castings. They are intended to provide:

A guide enabling recognition of discontinuities and their differentiation both as to type and severity level through digital radiographic imaging.

Example digital radiographic illustrations of discontinuities and a nomenclature for reference in acceptance standards, specifications, and drawings.

NOTE 1—The basis of application for these reference images requires a prior purchaser supplier agreement of radiographic examination attributes and acceptance criteria as described in Sections 5 and 6 of this standard.

These digital reference images consist of nine images covering discontinuities in aluminum and magnesium alloy die castings. Four contain graded sequences of four levels of increasing severity in aluminum castings. Four contain graded sequences of four levels of increasing severity in magnesium castings. The last image contains ungraded illustrations of inclusions in aluminum and magnesium alloy die castings.

Two kinds of illustration categories are covered as follows:

Graded—Three discontinuity categories for aluminum die castings and three discontinuity categories for magnesium die castings, each illustrated in four levels of progressively increasing severity. Category A discontinuities are illustrated for aluminum and magnesium die castings having thicknesses of 1 8 in. (3.2 mm) and 5 8 in. (15.9 mm); Category B discontinuities are illustrated for 1 8 in. thick aluminum and magnesium die castings; and Category C discontinuities are illustrated for 5 8 in. (15.9 mm) thick aluminum and magnesium die castings.