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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Other enclosures, desiccants, or desiccating techniques may be used that produce and maintain an atmosphere equivalent to that over anhydrous calcium chloride. Treat test specimens over 7 mm in thickness as above, except that the minimum time shall be 88 h.

Consequently, conditioning for reproducibility must of necessity be used for general purchase specifications and product control tests. 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.

In order to make reliable comparisons between 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.

ASTM D – CONDITIONING PLASTICS

In order that reliable comparisons may be made of c618 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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Start the tests immediately and complete them as soon as possible. ISO describes only two temperature and humidity conditions for conditioning or testing, or both.

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.

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. Selection of Conditioning Procedure Temperature and relative humidity tolerances shall be in accordance with Section 3, unless otherwise speci?

Procedures for maintaining close tolerances are described in Practice E Current edition approved November 1, 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.

Designations for Conditioning 7.

ASTM D Practice for Conditioning Plastics for Testing

Link to Active This link will always route to the current Active version of the standard. A number in parentheses indicates the qstm of last reapproval. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Precision and Bias November 1, 1 Added Note Consequently, conditioning for d681 must of necessity be used for general purchase speci? 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 – Refer to the material specification before using this practice.

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Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Originally approved in D68 Version s – view previous versions of standard.

ASTM D618 – Standard Practice for Conditioning Plastics for Testing

This practice defines procedures for conditioning plastics although not necessarily to equilibrium prior to testing, and the conditions under which they shall be tested. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. 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.

In such cases enclosures with circulating air should be used. Table 1 in Classi? 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. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

asgm This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Work Item s – proposed revisions of this standard. Tests at Normal Temperatures 9.