ASTM D618 PDF

ASTM D Practice for Conditioning Plastics for Testing. ASTM D EMSL book · Materials Testing Lab Services Guide · Products. Sample Reports. ASTM D – 13 Practice for Conditioning Plastics for Testing – Download as PDF File .pdf), Text File .txt) or read online. ASTM standard – Practice for. ASTM D Standard Practice for Conditioning Plastics for Testing.

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Standard Procedures for Conditioning Prior to Test 8. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Note 1 — This standard and ISO address the same subject matter, but differ in technical content. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. A number in atsm indicates the year of last reapproval. Tests at Normal Temperatures 9. Treat test specimens over 7 mm asgm thickness as above, except that the minimum time shall be 88 h.

Selection of Conditioning Procedure Consequently, conditioning for reproducibility must of necessity be used for general purchase specifications and product control tests. Specimens should only be removed from the water as the tests are ready to be conducted.

ISO describes only two temperature and humidity s618 for conditioning or testing, or both. 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.

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ASTM D618 – Standard Practice for Conditioning Plastics for Testing

NOTE 11—A considerable number of other procedures that might be considered as functional are outlined in Practice D Other enclosures, desiccants, or desiccating techniques may be used that produce and maintain an atmosphere equivalent to that over anhydrous calcium chloride. D Specification for Laminated Thermosetting Materials. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Designations for Conditioning 7.

The material specification takes precedence over this practice. Start the tests immediately and complete them as soon as possible. In these cases, or for materials that are not adversely affected by longer conditioning times, it is permissible to use conditioning times longer than asgm h.

astm d standard practice for conditioning pl_百度文库

In order that reliable comparisons may be made of different materials and between different laboratories, it is necessary to standardize the humidity conditions, as well as the temperature, to which specimens of these materials are subjected prior to and during testing.

To ensure substantial equilibrium under normal conditions of humidity and temperature, however, may require from 20 to days or more depending upon thickness and type of material and its previous history. Last previous edition approved in as D – Link to Active This link will always route to the current Active version of the standard.

Additional measurements shall be made throughout the area to show compliance to the temperature and relative humidity required. Precision and Bias 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.

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Shorter conditioning times may be used for thin specimens provided equilibrium is substantially obtained. Refer to the material specification before using this practice.

Tests at Other Standard Test Temperatures NOTE 6—Procedure B is commonly used for the purpose of obtaining reproducible test results on the thermosetting materials by means of a short-time conditioning period, or where the speci? The tolerances d168 this ast shall be as follows: November 1, 1 Added Note Originally approved in Depending on the thickness, type of material and its previous history, it is possible that it would take 20 to days or more to ensure substantial equilibrium under normal conditions of humidity and temperature.

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.

Temperature and relative humidity tolerances shall be in accordance with Section 3, unless otherwise speci? Historical Version s – view previous versions of standard.

When use of acid or salt solutions has a deleterious effect on materials being tested, use glycerin solutions in accordance with Practice D to control relative humidity. Current ast, approved November 1, Table 1 in Classi? NOTE 8—It has been found that, for certain tests and materials, more reliable data are obtained in enclosures with circulating air rather than still air.