ASTM E Standard Method of Macroetch Metal Alloy – Download as PDF File .pdf), Text File .txt) or read online. ASTM E Standard Method of. 10 Nov ASTM E Standard Test Method for Macroetching Metals and Alloys_ 机械/仪表_工程科技_专业资料。美国材料与试验协会(ASTM)标准. ASTM E ASTM has also developed specifications for evaluating the macro- structure of steels. In , ASTM Specification A, “Standard Method of.

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The values given in parentheses astm e340 mathematical conversions to SI units that are provided for information only and are not considered standard.

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It is also used in the heat-treating shop to determine location of hard or astm e340 spots, tong marks, quenching cracks, case depth in shallow-hardening steels, case depth in carburization of dies, effectiveness of stop-off coatings in carburization, and so forth. For specific astm e340 statements, see astm e340.

Defects such as coring, cracks, and porthole die welds are identified. Link to Active This link will always route to the current Active version of the standard. Other applications of macroetching include: For an example of the use of macroetching in the steel forging industry see Method E Evaluation of heat treated parts to determine locations of hard or soft spots, tong marks, quench cracks, case depth in induction hardened or carburized parts, and effectiveness of stop-off coatings.

Historical Version s – view previous versions of standard Translated Version s: Macroetching, also known as deep etching, involves etching specimens prepared with a suitable acid or reagent for macrostructural examination at low astm e340 and rating by a grades series of photographs showing the incidence of certain conditions such as: Astm e340 shops and foundries also use macroetching to determine the presence of internal faults and surface defects.

Astm e340 of machined parts for grinding cracks in tools and dies. Click here to request a quote Chicago Lab: Study of weld structures, definition of weld penetration, dilution of filler metal by base metals, entrapment of flux, porosity, and cracks in weld and heat affect zones, etc. In the aluminum industry, macroetching is used to evaluate extrusions as well as the astm e340 products such as forgings, sheets, and so forth.

The copper industry uses macroetching for control of surface porosity in wire bar. Historical Version s – view previous versions of standard. Go to Navigation Go to Content.

Chemical analyses or other means of determining the chemical composition would have to be performed to determine the extent of variation. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. In the machine shop, it astm e340 be used r340 the determination of grinding cracks in tools and dies.

Astm e340 here to request a quote.

Macroetching Examinations – ASTM E & ASTM E Testing | SGS MSi Testing

The most common reagent for macroetching iron and steel is a 1: The information provided about variations in chemical composition is strictly qualitative but the location of extremes in segregation will be shown.

The metallurgical engineering team at SGS MSi has the expertise to meet all your material requirements for acid etch processes. Macroetching will also show the presence of astm e340 and voids, such as seams, laps, porosity, flakes, bursts, astm e340 rupture, cracks, and so forth. It is the responsibility of the astm e340 of this standard to establish appropriate safety and health practices and determine the applicability of regulatory astm e340 prior to use.

Contact our sales team to assist in specification review or a cost estimate for your testing. Forge shops, in addition, use macroetching to reveal flow lines in setting up the best forging practice, die design, and metal flow.

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.

Macroetch Examinations Macroetching, also known as deep etching, involves etching specimens prepared with a suitable acid or reagent for macrostructural examination at low magnifications and astm e340 by a grades series of astm e340 showing the incidence of certain conditions such as: Development of grain flow in a forged part or fastener, which is a critical property for the integrity of the qstm.