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Standard Guide for Preparing and Evaluating Specimens for Automatic Inclusion Assessment of Steel
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STANDARD published on 1.5.2018
Designation standards: ASTM E768-99(2018)
Publication date standards: 1.5.2018
SKU: NS-851248
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
automatic image analysis, differential interference contrast, inclusions, specimen preparation, steel,, ICS Number Code 77.040.01 (Testing of metals in general)
Adjunct to E768 Practice for Preparing and Evaluating Specimens for Automatic Inclusion Assessment of Steel
Selected format:Significance and Use | ||||||||||||||
4.1 Inclusion ratings done either manually using Test Methods E45 or automatically using Practice E1122 or E1245 are influenced by the quality of specimen preparation. This guide provides examples of proven specimen preparation methods that retain inclusions in polished steel specimens. 4.2 This guide provides a procedure to determine if the prepared specimens are of suitable quality for subsequent rating of inclusions. None of these methods should be construed as defining or establishing specific procedures or limits of acceptability for any steel grade. |
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1. Scope | ||||||||||||||
1.1 This guide2 covers two preparation methods for steel metallographic specimens that will be analyzed for nonmetallic inclusions with automatic image analysis (AIA) equipment. The two methods of preparation are offered as accepted methods used to retain nonmetallic inclusions in steel. This guide does not limit the user to these methods. 1.2 A procedure to test the suitability of the prepared specimen for AIA inclusion work, using differential interference contrast (DIC), is presented. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. |
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2. Referenced Documents | ||||||||||||||
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