New Classification for Digital Reference Images for Gray Iron Castings Up to 4 1/2 In. (114 mm) in Thickness
1. Scope
1. Scope
1.1 These digital reference images for gray iron castings consist of one set of illustrations of centerline shrinkage with severity levels 1 to 5 using three radiation source types as follows:
1.1.1 Volume I: Medium Voltage (Nominal 250 kVp) X-ray Digital Reference Images—Set of 5 severity levels in a single digital reference image file.
1.1.2 Volume II: Iridium-192 Digital Reference Images—Set of 5 severity levels in a single digital reference image file.
1.1.3 Volume III: Cobalt-60 Digital Reference Images—Set of 5 severity levels in a single digital reference image file.
NOTE 1—The digital reference images are an adjunct to this document and must be purchased separately from ASTM International if needed.
1.2 Only licensed copies of the software and images shall be utilized for production inspection. A copy of the ASTM/User license agreement shall be kept on file for audit purposes. (See Note 1.)
NOTE 1—The set of digital reference images consists of three digital data files, and software to load the desired format and specific instructions on the loading process. The three reference image pages illustrate graded discontinuities in gray iron castings. Available from ASTM International Headquarters, Order No: RREXXXX.
1.3 These digital reference images are not intended to illustrate the types and degrees of discontinuities found in gray iron castings when performing film radiography. If performing film radiography of such castings, refer to Reference Radiographs E802.
1.4 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Keywords
castings; discontinuities; gamma ray; gray iron; digital reference images; X-ray
Rationale
This new standard will provide reference images for the evaluation and acceptance of gray iron castings radiographed using digital imaging methods.
