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ASTM International - ASTM E381-20

Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings

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Organization: ASTM International
Publication Date: 1 May 2020
Status: active
Page Count: 5
ICS Code (Iron and steel forgings): 77.140.85
significance And Use:

4.1 Macroetching is used in the steel industry because it is a simple test that will provide information about the relative homogeneity of the sample. The method employs the action of an acid or... View More

scope:

1.1 Macroetching, which is the etching of specimens for macrostructural examination at low magnifications, is a frequently used technique for evaluating steel products such as bars, billets, blooms, and forgings.

1.2 Included in this method is a procedure for rating steel specimens by a graded series of photographs showing the incidence of certain conditions. The method is limited in application to bars, billets, blooms, and forgings of carbon and low alloy steels.

1.3 A number of different etching reagents may be used depending upon the type of examination to be made. Steels react differently to etching reagents because of variations in chemical composition, method of manufacture, heat treatment and many other variables. Establishment of general standards for acceptance or rejection for all conditions is impractical as some conditions must be considered relative to the part in which it occurs.

1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See the specific precautionary statement in 5.3.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Document History

ASTM E381-20
May 1, 2020
Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
4.1 Macroetching is used in the steel industry because it is a simple test that will provide information about the relative homogeneity of the sample. The method employs the action of an acid or...
June 1, 2017
Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
4.1 Macroetching is used in the steel industry because it is a simple test that will provide information about the relative homogeneity of the sample. The method employs the action of an acid or...
October 1, 2012
Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
4.1 Macroetching is used in the steel industry because it is a simple test that will provide information about the relative homogeneity of the sample. The method employs the action of an acid or...
October 1, 2006
Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
1.1 Macroetching, which is the etching of specimens for macrostructural examination at low magnifications, is a frequently used technique for evaluating steel products such as bars, billets, blooms,...
April 10, 2001
Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
1.1 Macroetching, which is the etching of specimens for macrostructural examination at low magnifications, is a frequently used technique for evaluating steel products such as bars, billets, blooms,...
April 10, 2001
Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
1.1 Macroetching, which is the etching of specimens for macrostructural examination at low magnifications, is a frequently used technique for evaluating steel products such as bars, billets, blooms,...
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