ASTM E381 PDF

Our labs can perform many reliable metallurgical testing methods, each with distinct advantages. Let us help you determine if macroetching is the best option for your material. More Less Macroetch testing can be used across a variety of applications, and is most often applied when looking for surface characteristics of a material. Some common uses for macroetching include: Quality control Macroetch testing is frequently used as an efficient, effective method of quality control in batches of material. By testing samples from batches of material after manufacturing is complete, we can ensure that no defects occurred during processing, and that the lot is ready to be used for any project. Failure analysis Often, the surface characteristics of a metal offer important clues about why a failure has occurred.

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More E The method employs the action of an acid or other corrosive agent to develop the macrostructural characteristics of a suitably prepared specimen.

Sulfur printing shall be performed in accordance with Practice E Examination and rating of specimens shall be in accordance with Sections 10 and 11 of this E standard. Continuously cast steel blooms and billets, in the as cast condition, shall be examined according to the procedures described in Sections 10 and With reductions over a area ratio, wrought product from continuously cast steel may be examined according to Section 9.

Scope 1. The method is limited in application to bars, billets, blooms, and forgings of carbon and low alloy steels. 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. 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. See the specific precautionary statement in 5.

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Macroetch Examinations

You are on page 1of 8 Search inside document wy! The method is limited in application to bars, billets, blooms, and forgings of carbon and low alloy steels, 1. It i the responsibility of the user of this standard to establish appro: priate safety and health practices and determine the applica bility of regulatory limitations prior 10 use. See the specific precautionary statement in 5. Curse edition approved Ot , , Phos October

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Significance and Use 4. The method employs the action of an acid or other corrosive agent to develop the macrostructural characteristics of a suitably prepared specimen. Sulfur printing shall be performed in accordance with Practice E Examination and rating of specimens shall be in accordance with Sections 10 and 11 of this E standard. Continuously cast steel blooms and billets, in the as cast condition, shall be examined according to the procedures described in Sections 10 and

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Macroetch Test Services

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