ASTM E2142-01
Historical Standard: ASTM E2142-01 Standard Test Methods for Rating and Classifying Inclusions in Steel Using the Scanning Electron Microscope
SUPERSEDED (see Active link, below)
ASTM E2142
1. Scope
1.1 This test method covers procedures to obtain particle size distribution, chemical classification, and E45 ratings of inclusions in steels using an automated scanning electron microscope (SEM) with X-ray analysis and automatic image analysis capabilities.
1.2 There are three discrete methods described. Method 1 is the SEM analog of E1122, which uses image analysis and light microscopy to produce automated E45 ratings. Method 2 produces similar ratings based predominantly on sorting inclusions by chemistry into the traditional classes defined in E45. Method 3 is recommended when explicit detail is needed on particular inclusion types, not necessarily defined in E 45, such as to verify the composition of inclusions in inclusion-engineered steel. Method 3 reports stereological parameters such as volume or number fraction, rather than E45 type ratings.
1.3 This test method deals only with the recommended test methods and nothing in it should be construed as defining or establishing limits of acceptability for any grade of steel or other alloy where the method is appropriate.
1.4 The values stated in SI units are to be regarded as the standard. Values in parentheses are conversions and are approximate, and for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
E3 Guide for Preparation of Metallographic Specimens
E7 Terminology Relating to Metallography
E45 Test Methods for Determining the Inclusion Content of Steel
E766 Practice for Calibrating the Magnification of a Scanning Electron Microscope
E768 Guide for Preparing and Evaluating Specimens for Automatic Inclusion Assessment of Steel
E1245 Practice for Determining the Inclusion or Second-Phase Constituent Content of Metals by Automatic Image Analysis
E1508 Guide for Quantitative Analysis by Energy-Dispersive Spectroscopy
Adjuncts
ANSI/IEEESTD759 IEEE Standard Test Procedure for Semiconductor X-Ray Energy Spectrometers Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE), 445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331, http://www.ieee.org.Keywords
automatic image analysis; complex inclusions; EDX; globular inclusions; inclusions; inclusion ratings; inclusion stringers; oxides; second-phase particles; SEM; steel; stereology; sulfides; X-Ray microanalysis; Automated procedures--metals/alloys; Inclusions--metals/alloys; Metallographic preparation; Particle size distribution; Scanning electron microscope (SEM); Second-phase particles; SEM/EDX processing; Stereological measurement; X-ray microanalysis;
ICS Code
ICS Number Code 77.140.01 (Iron and steel products in general)
DOI: 10.1520/E2142-01
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