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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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Shorter conditioning times may be used for thin specimens provided equilibrium is substantially obtained. Additional measurements shall be made throughout the area to show compliance to the temperature and relative humidity required.

NOTE 12—It has been found that, for certain tests and materials, more reliable data are obtained in enclosures with circulating air rather than still air. 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. Link to Active This link will always route to the current Active version of the standard.

This standard has been approved for use by agencies of the Department of Defense.

November 1, 1 Added Note Start the test as soon as possible, but do not allow more than 1? A number in parentheses indicates the wstm of last reapproval. Selection of Conditioning Procedure In these cases, or for materials that are not adversely affected by longer conditioning times, it is permissible to use conditioning times longer than 5 h.

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. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

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.

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D Specification for Laminated Thermosetting Materials. 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.

Current edition approved November 1, Last previous edition approved in as D – Temperature and relative humidity tolerances shall be in accordance with Section 3, unless otherwise speci?

ASTM D618 – Standard Practice for Conditioning Plastics for Testing

A superscript epsilon e indicates an editorial change since the last revision or reapproval. Hold the specimens at the test temperature for no more than 5 h prior to test, and in no case for less than the time required to ensure thermal equilibrium.

Refer to the material specification before using this practice. Standard Procedures for Conditioning Prior to Test 8.

ISO describes only two temperature and astk conditions for conditioning or testing, or both. Historical Version s – view previous versions of standard. NOTE 11—A considerable number of other procedures that might be considered as functional are outlined in Practice D Consequently, conditioning for reproducibility must of necessity be used for general purchase speci? This practice defines procedures for conditioning plastics although not necessarily to equilibrium prior to testing, and the conditions under which they shall be tested.

ASTM D – 13 Standard Practice for Conditioning Plastics for Testing

Note asttm — This standard and ISO address the same subject matter, but differ in technical content. Specimens should only be removed from the water as the tests are ready to be conducted. Procedures for maintaining close tolerances asmt described in Practice E 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.

It is the responsibility of the user v618 this standard to establish astn safety and health practices and determine the applicability of regulatory limitations prior to use. Precision and Bias Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Consequently, conditioning for reproducibility must of necessity be used for general purchase specifications and product control tests.

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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.

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Tests at Other Standard Test Temperatures In such cases enclosures with qstm air should be used. Other enclosures, desiccants, or desiccating techniques may be used that produce and maintain an atmosphere equivalent to that over anhydrous calcium chloride. The material specification takes precedence over this practice.

NOTE 10—Constant relative humidity can be obtained only by careful temperature control. Tests at Normal Temperatures 9. Originally approved in Table 1 in Classi? D6618 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. Treat test specimens over 7 mm in thickness as above, except that the minimum time shall be 88 h.

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. Start the tests immediately and complete them as soon as possible.

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?

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.