ASTM-E2142:2008 Edition

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E2142-08 Standard Test Methods for Rating and Classifying Inclusions in Steel Using the Scanning Electron Microscope

Published By	Publication Date	Number of Pages
ASTM	2008	15

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Categories: 77.140.01 - Iron and steel products in general, ASTM

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Description

ASTM E2142-08

Historical Standard: Standard Test Methods for Rating and Classifying Inclusions in Steel Using the Scanning Electron Microscope

ASTM E2142

Scope

1.1 This test method covers procedures to obtain particle size distribution, chemical classification, and Test Methods E 45 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 Test Method E 45, which uses image analysis and light microscopy to produce automated Test Methods E 45 ratings. Method 2 produces similar ratings based predominantly on sorting inclusions by chemistry into the traditional classes defined in Test Methods E 45. Method 3 is recommended when explicit detail is needed on particular inclusion types, not necessarily defined in Test Methods 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 Test Methods E 45 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 standard. No other units of measurement are included in this 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 and health practices and determine the applicability of regulatory limitations prior to use.

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/E2142-08

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use
3	FIG. 1
4	Apparatus Sampling Test Specimens Specimen Preparation TABLE 1 TABLE 2
5	Calibration and Standardization Procedure
6	Classification of Inclusions and Calculation of Severities: Method 1: the SEM analog to Test Methods , based on Morphology, Chemistry and Thickness Classification of Inclusions and Calculation of Severities: Method 2, based on Chemistry, Morphology and Thickness
7	Classification of Inclusions: Method 3: Custom Test Report
8	FIG. 2
9	FIG. 2
10	Precision and Bias Keywords
11	FIG. 3
12	FIG. 3
13	X1. Typical Acquisition Analysis Rules TABLE X1.1
14	X2. X-Ray Counting and Chemical Classification Statistics X2.1 X-Ray Counting Statistics X2.2 Stopping Criteria for X-Ray Analysis of Single Inclusion
15	X2.3 Procedure for Empirically Determining the Optimal Counting Criterion

Additional information

Standard Title	E2142-08 Standard Test Methods for Rating and Classifying Inclusions in Steel Using the Scanning Electron Microscope
Published Code	ASTM
Publication Date	2008
Pages Count	15
ICS Codes	77.140.01 - Iron and steel products in general