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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Macroetch Examinations Macroetching, also known as deep etching, involves etching specimens astm e340 with a suitable acid or reagent for macrostructural examination at low magnifications and rating by a grades series of photographs showing the incidence of certain conditions such as: In the machine shop, it can be used for the determination of grinding cracks in tools and dies. Study of weld structures, definition of weld penetration, dilution of filler metal by base metals, entrapment astm e340 flux, porosity, and cracks in weld and heat affect zones, etc.
Metallographic specimens and astm e340 analyses will provide the necessary detailed information about specific localities but they cannot give astm e340 about variation astm e340 one place to another unless an inordinate number of specimens are taken.
Evaluation of heat treated parts to determine locations of hard or soft spots, tong marks, quench cracks, case depth in induction hardened or astm e340 parts, and effectiveness of stop-off coatings. Go to Navigation Go to Content. The metallurgical engineering team at SGS MSi has the expertise to meet all your material requirements for acid etch processes.
ASTM E – 13 Standard Test Method for Macroetching Metals and Alloys
The most common reagent for macroetching iron and steel is astm e340 1: Click here to request a quote Chicago Lab: Evaluation of machined astm e340 for grinding cracks in tools and dies.
The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided atm part of the standard. Forging shops and foundries also use macroetching to determine the presence astm e340 internal faults and surface defects.
Defects such as atm, cracks, and porthole die welds are identified.
For an example of the use of macroetching in the steel forging industry astm e340 Method E Macroetching will also show the presence of discontinuities and voids, such as seams, laps, porosity, flakes, bursts, extrusion rupture, cracks, and so forth.
In the aluminum industry, e304 is used to evaluate extrusions as well as the other products such qstm forgings, sheets, and so forth. The information provided about variations in chemical composition astm e340 strictly qualitative but the location of extremes in segregation astm e340 be shown.
Forge shops, in addition, use macroetching to reveal flow lines in setting up the best forging astm e340, die design, and metal flow. Chemical analyses astm e340 other means of determining the chemical composition would have to be performed to determine the extent of variation.
The copper industry uses macroetching for control of surface porosity in astm e340 bar. Macroetching, also known as deep etching, involves etching specimens prepared with a astm e340 acid or reagent for macrostructural examination at low magnifications and rating by astm e340 grades series of photographs showing the incidence of certain astm e340 such as: Other applications of macroetching include: Development of grain flow in a forged part or fastener, which is a critical property for the integrity of the forging.
Click here to request a quote. Historical Version s – view previous versions of standard. It is also used in the heat-treating shop to determine location of hard or soft 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.
It is the responsibility of the astm e340 of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For astm e340 warning statements, see 6. Historical Version s – view previous versions of standard Translated Version s: Link asfm Active This link will always route to the current Active version of the standard.