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ASTM E2142-01

Historical Revision

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

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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.


SDO ASTM: ASTM International
Document Number E2142
Publication Date April 10, 2001
Language en - English
Page Count 16
Revision Level 01
Supercedes
Committee E04.11
Publish Date Document Id Type View
Oct. 1, 2008 E2142-08 Revision
April 10, 2001 E2142-01 Revision
Nov. 1, 2023 E2142-08R23 Reaffirmation
Oct. 1, 2015 E2142-08R15 Reaffirmation