ASTM E381 PDF

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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Examination of Continuously Cast Product Specimens If the tank is metallic, the disks being etched should not be in contact with each other or with the vessel. Sulfur printing shall be performed in accordance with Practice E There were no books found for the applied search filters.

E Standard Terminology Relating to Metallography. The method is limited in application to bars, billets, blooms, and forgings of carbon and xstm alloy steels.

ASTM E381 – 17

Plate III is used to identify the type of condition observed on the macroetch specimens. The reagent is used at room temperature by immersion or swabbing. Asfm brush may have natural vegetable or synthetic? The specimen should not be blotted dry. Such contact will set up electrolytic galvanic couples and will produce an uneven and misleading etch attack.

Torch cutting or other hot cutting will materially affect the structure of the specimen and may be used only when necessary to remove a larger piece prior to cutting to size s381 cold methods.

E — 01 5. A freshly made solution is necessary for best results. If you like to setup a quick demo, let us know at support madcad.

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Other rating methods may be established per agreement between the user and producer. The use of this reagent necessitates a smooth surface. Sharp tools are necessary to produce a good specimen.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This will generate a smooth surface and remove cold work from prior operations. In most cases, 15 to 30 min will be sufficient for hot-acid etching. Copyright Compu-tecture, Adtm.

In the case of forgings, depending upon prior agreement, this may be accomplished by adding excess metal for discard on ashm ends or ends of the forging; or, by forging in multiple lengths and removing the test disk between individual pieces when cutting up the multiple forging. Random sampling of the? Enter your personal account email address to request a password reset: A number in parentheses indicates the year of last reapproval.

Macroetch Examinations

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Originally approved in See the specific precautionary statement in 5.

Continuously cast steel blooms and billets, in the as cast condition, shall be examined according to the procedures described in Sections 10 and The usual procedure is to take a roughing cut, then a? 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 the bottom of the dish.

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Register for a trial account. Sufficient torch cut material should be removed by cold cutting to eliminate the thermal effects of torch cutting. Sampling of continuously cast product is usually done in the as-cast condition, or after intermediate or?

Photographs for Rating Macroetched Steel 3 plates 3 3. Also report the presence of any of the conditions in Plate II. The solution may be heated without serious change in concentration. Remove the smut that forms on the specimen surface by scrubbing the surface with a stiff brush under hot running astk.

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Maintain a sufficient volume of solution in the vessel to cover the specimen with a layer of at least 25 mm 1 in. It may be asttm to use solvents to clean the axtm. 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.

See Test Method E for other etching solutions. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Search book title Enter keywords for book title search. This is especially true for sulfuric acid.

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