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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Historical Version s – view previous versions of standard. Consequently, conditioning for reproducibility must of necessity be used for general purchase speci? Other enclosures, desiccants, or desiccating techniques may be used that produce and maintain an atmosphere equivalent to that over anhydrous calcium chloride.
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. A number in parentheses indicates the year of last reapproval. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Additional measurements shall be made throughout the area to show compliance to the temperature and relative humidity required.
This practice defines procedures for conditioning plastics although not necessarily to equilibrium prior to testing, and the conditions under which they shall be s618. 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.
Current edition approved November 1, Start the tests immediately and complete them as soon as possible. Link to Active Xstm link will always route to the current Active version of the standard. 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 D618 – Standard Practice for Conditioning Plastics for Testing
When use of acid or salt solutions has a deleterious effect on materials being tested, use glycerin solutions in s618 with Practice D to control relative humidity. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Shorter conditioning times may be used for thin specimens provided equilibrium is substantially obtained.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. 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.
Originally approved in The tolerances for this procedure shall be as follows: Work Item s – proposed revisions of this standard. ISO describes only two temperature and humidity conditions for conditioning or testing, or both. 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.
Treat test specimens over 7 mm in thickness as above, except that the minimum time shall be 88 h. NOTE 11—A considerable number of other procedures that might be considered as functional are outlined in Practice D NOTE 10—Constant relative humidity can be obtained only by careful temperature control.
Standard Procedures for Conditioning Prior to Test 8. The material specification takes precedence over this practice.
November 1, 1 Added Note If you feel that your comments have not received a fair hearing you should make r618 views known to the ASTM Committee on Standards, at the address shown below.
In such cases enclosures with circulating air should be used. Refer to the material speci?
ASTM D Practice for Conditioning Plastics for Testing
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Temperature and relative humidity tolerances shall be in accordance with Section 3, unless otherwise speci? Tests at Normal Temperatures 9. Consequently, conditioning for reproducibility must of necessity ast, used for general purchase astk and product control tests.
Procedures for maintaining close tolerances are described in Practice E 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. 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.
D Specification for Laminated Thermosetting Materials. Start the test as soon as possible, but do not allow more than e618 Precision and Bias Tests at Other Standard Test Temperatures 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 asttm of these materials are subjected prior to and during testing.
Designations for Conditioning 7.