Norma ASTM E-340:200

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Fecha: el 05/08/2012
Categoria: General
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Descripción: Norma ASTM E-340:200 en ingles
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Designation: E 340 ­ 00e1

Standard Test Method for

Macroetching Metals and Alloys1
This standard is issued under the fixed designation E 340; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense.

e1 NOTE--Table 13 was editorially updated in August 2002.

1. Scope 1.1 These test procedures describe the methods of macroetching metals and alloys to reveal their macrostructure. 1.2 The values stated in inch-pound units are to be regarded as the standard. The SI equivalents of inch-pound units may be approximate. 1.3 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. For specific warning statements, see 6.2, 7.1, 8.1.3, 8.2.1, 8.8.3, 8.10.1.1, and 8.13.2. 2. Referenced Documents 2.1 ASTM Standards: E 3 Methods of Preparation of Metallographic Specimens2 E 381 Method of Macroetch Testing, Steel Bars, Billets, Blooms, and Forgings2 3. Significance and Use 3.1 Applications of Macroetching: 3.1.1 Macroetching is used to reveal the heterogeneity of metals and alloys. Metallographic specimens and chemical analyses will provide the necessary detailed information about specific localities but they cannot give data about variation from one place to another unless an inordinate number of specimens are taken. 3.1.2 Macroetching, on the other hand, will provide information on variations in (1) structure, such as grain size, flow lines,
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4 opiniones

Buenos Aires, Argent...
Escrito por Jose el 22/08/2012

Aceptan
Chiapas, México
Escrito por jose el 08/08/2012

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Sucre, Venezuela
Escrito por carla el 07/08/2012

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Chiapas, México
Escrito por jose el 07/08/2012

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