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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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Selection of Conditioning Procedure Work Item s – proposed revisions of this standard. 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. Last previous edition approved in as D – The material specification takes precedence over this practice. 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.

NOTE atsm has been found that, for certain tests and materials, more reliable data are obtained in enclosures with circulating air rather than still air.

Other enclosures, desiccants, or desiccating techniques may be used that produce and maintain an atmosphere equivalent to that over anhydrous calcium chloride.

Your comments x618 invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Refer to the material specification before using this practice.

ASTM D618 – Standard Practice for Conditioning Plastics for Testing

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. Wstm 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.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are astk provided as part of the standard.

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Procedures for maintaining close tolerances are described in Practice E Specimens should only be removed from the water as the tests are ready to be conducted. 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.

Standard Procedures for Conditioning Prior to Test 8. Start the tests immediately and complete them as soon as possible. Start the test as soon as possible, but do not allow more than 1?

The tolerances for this procedure shall be as follows: Tests at Normal Temperatures 9. NOTE 11—A considerable number of other procedures asmt might be considered as functional are outlined in Practice D Link to Active This link will always route to the current Active version of the standard.

NOTE 6—Procedure B is commonly used for the purpose of obtaining reproducible test results on 6d18 thermosetting materials by means of a short-time dd618 period, or where the speci? A superscript epsilon e indicates an editorial change since the last revision or reapproval. 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.

Shorter conditioning times may be used for thin specimens provided equilibrium is substantially obtained. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

ASTM D – CONDITIONING PLASTICS

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. Temperature and relative humidity tolerances shall be in accordance with Section 3, unless otherwise speci? Designations for Conditioning 7.

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Historical Version s – view previous versions of standard. Consequently, conditioning for reproducibility must of necessity be used for general purchase speci? Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. A number in parentheses indicates the year of last reapproval. Tests at Other Standard Test Temperatures ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

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. D Specification for Laminated Thermosetting Materials. Treat test specimens over 7 mm in thickness as above, except that the minimum time shall be 88 h. 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.

ASTM D Practice for Conditioning Plastics for Testing

Table 1 in Classi? Provide adequate air circulation on all sides of the test specimens by placing them in suitable racks, hanging them from metal clips or laying them on wide-mesh, wire screen frames with at least 25 mm [1 in. Current edition approved November 1, November 1, 1 Added Note 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.

Consequently, conditioning for reproducibility must of necessity be used for general purchase specifications and product control tests. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. In such cases enclosures with circulating air should be used.