Find the most up-to-date version of ASTM E at Engineering Macroetching, also known as deep etching, involves etching specimens prepared with a suitable acid or reagent for macrostructural examination. Contact us. Purchase your copy of ASTM E – 17 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available.
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The acids are strong and they can cause serious chemical burns.
ASTM E381 – 17
Also report the presence of any of the conditions in Plate II. E — 01 Sampling of continuously cast product is usually done in the as-cast condition, or after intermediate or?
The method employs the action of an acid or zstm corrosive agent to develop the macrostructural characteristics of a suitably prepared specimen. The usual procedure is to take a roughing cut, then a?
If the tank is metallic, the disks being etched should not be astn contact with each other or with the vessel. The etching solution may be reused if it has not become excessively contaminated or weakened. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
This should be added to an etching bath that is operating at room temperature. See Test Method E for other etching solutions. Disks or specimens are usually cut to reveal a transverse surface, but the requirements of the speci?
In most cases, 15 to 30 min will be sufficient for hot-acid etching. Resins in wood used to make tanks sometimes act as uncertain and uneven inhibitors resulting in unsatisfactorily etched disks.
The method employs the action of an acid or other corrosive agent to develop the macrostructural characteristics of a suitably prepared specimen. Steels react differently to etching reagents because of variations in chemical composition, method of manufacture, heat treatment and many other variables. The most common reagent for macroetching iron and steel is a 1: Other applications of macroetching include: With reductions over a 3: Click here to download full list of books.
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. Continuously cast steel blooms and billets, in the as cast condition, shall be examined according to the procedures described in Sections 10 and The use of this reagent necessitates a smooth surface. This standard has been approved for use by agencies of the Department of Defense.
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ASTM E – 17 – Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
The method is limited in application to bars, billets, blooms, and forgings of carbon and low alloy steels. The hydrochloric acid need not be reagent grade.
Last previous edition approved in as E — When the use of a reagent other than those described in 5. Add acid slowly to water with stirring. Sulfur printing shall be performed in accordance with Practice E This is especially true for sulfuric acid. Sufficient torch cut material should be removed by cold cutting to eliminate the thermal effects of torch cutting. This brush may have natural vegetable or synthetic?
Macroetching Examinations – ASTM E & ASTM E Testing | SGS MSi Testing
The specimens may be placed directly into the solution, but the best practice is to place the specimen in corrosion-resistant baskets or on corrosion-resistant supports, such as glass rods underneath the specimen to raise it off aetm bottom of the dish. Some conditions related to the cast structure for example, chill asfm and columnar structure may not be discernible in product which has been reduced by rolling and forging while pattern is only discernible in a wrought specimen.
Conditions to be rated and their level may be established by agreement between the purchaser and producer.
Billets or blooms going into small sizes are sampled after the initial breakdown. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Your axtm will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
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.
Are you sure you want to empty the cart? Other rating methods may be established per agreement between the user and producer.