ASTM E768-99(2005)
Standard Guide for Preparing and Evaluating Specimens for Automatic Inclusion Assessment of Steel

Standard No.

ASTM E768-99(2005)

Release Date

1999

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E768-99(2010)

Latest

ASTM E768-99(2018)

Scope

Inclusion ratings done either manually using Test Methods E 45 or automatically using Practice E 1122 or E 1245 are influenced by the quality of specimen preparation. This guide provides examples of proven specimen preparation methods that retain inclusions in polished steel specimens.

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.

1.1 This guide178 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.

ASTM E768-99(2005) Referenced Document

• ASTM E1122 Standard Practice for Obtaining JK Inclusion Ratings Using Automatic Image Analysis
• ASTM E1245 Standard Practice for Determining the Inclusion or Second-Phase Constituent Content of Metals by Automatic Image Analysis
• ASTM E3 Standard Practice for Preparation of Metallographic Specimens
• ASTM E45 Standard Test Methods for Determining the Inclusion Content of Steel*， 1999-09-28 Update
• ASTM E7 Standard Terminology Relating to Metallography*， 2022-10-01 Update
• ASTM E883 Standard Guide for Reflected-Light Photomicrography

ASTM E768-99(2005) history

• 2018 ASTM E768-99(2018) Standard Guide for Preparing and Evaluating Specimens for Automatic Inclusion Assessment of Steel
• 1999 ASTM E768-99(2010)e1 Standard Guide for Preparing and Evaluating Specimens for Automatic Inclusion Assessment of Steel
• 1999 ASTM E768-99(2010) Standard Guide for Preparing and Evaluating Specimens for Automatic Inclusion Assessment of Steel
• 1999 ASTM E768-99(2005) Standard Guide for Preparing and Evaluating Specimens for Automatic Inclusion Assessment of Steel
• 1999 ASTM E768-99(2004) Standard Guide for Preparing and Evaluating Specimens for Automatic Inclusion Assessment of Steel
• 1999 ASTM E768-99 Standard Practice for Preparing and Evaluating Specimens for Automatic Inclusion Assessment of Steel