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ASTM-E2142:2001 Edition

ASTM-E2142:2001 Edition

$44.96

E2142-01 Standard Test Methods for Rating and Classifying Inclusions in Steel Using the Scanning Electron Microscope

Published By Publication Date Number of Pages
ASTM 2001 16
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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.

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 E 1122
, based on Morphology, Chemistry and Thickness
8 Classification of Inclusions and Calculation of Severities: Method 2, based on Chemistry, Morphology and Thickness
FIG. 2
TABLE 3
9 Classification of Inclusions: Method 3: Custom
Test Report
10 FIG. 3
11 FIG. 3
12 Precision and Bias
FIG. 4
13 Keywords
FIG. 4
14 X1. Typical Acquisition Analysis Rules
TABLE X1.1
15 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
16 X2.3 Procedure for Empirically Determining the Optimal Counting Criterion

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