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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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.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. 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? Other enclosures, desiccants, or desiccating techniques may be used that produce and maintain an atmosphere equivalent to that over anhydrous calcium chloride.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. The tolerances for this procedure shall be as follows: Standard Procedures for Conditioning Prior to Test 8.
ASTM D Practice for Conditioning Plastics for Testing
Designations for Conditioning 7. Consequently, conditioning for reproducibility must of necessity be used for general purchase specifications and product control tests. NOTE 12—It has been found that, for certain tests and materials, more reliable data are obtained in enclosures with ashm air rather than still air. Asttm 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.
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. Refer to the material speci? Specimens should only be removed from the water as the tests are ready to be conducted.
Tests at Other Standard Test Temperatures 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. Treat test specimens over 7 mm in thickness as above, except that the minimum time shall be 88 h. Provide adequate air circulation on all sides v618 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.
To ensure substantial equilibrium under normal conditions of humidity and temperature, however, may require asmt 20 to days or more depending upon thickness and type of material and its previous history. 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. NOTE 10—Constant relative humidity can be obtained only by careful temperature control. Procedures for maintaining close tolerances are described in Practice E D Specification for Laminated Thermosetting Materials.
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. Precision and Bias Work Item s – proposed revisions of this standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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.
Current edition approved November 1, Temperature and relative humidity tolerances shall be in accordance with Section 3, unless otherwise speci? ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
Additional measurements shall be made throughout the area to show compliance to the temperature and relative asstm required. Refer to the material specification before using this practice. In order asm 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.
Start the tests immediately and complete them as soon as possible. A number in parentheses indicates the year of last reapproval.
ASTM D618 – Standard Practice for Conditioning Plastics for Testing
atm This standard has been approved for use by agencies of the Department of Defense. Last previous edition approved in as D – Shorter conditioning times may be used for thin specimens provided equilibrium is substantially obtained.
Table 1 in Classi? Note 1 — This standard and ISO address the same subject matter, but differ in technical content. ISO describes only two temperature and humidity conditions for conditioning or testing, or both. November 1, 1 Added Note In such cases enclosures with circulating air should be used.
NOTE 11—A considerable number of other procedures that might be considered as functional are outlined in Practice D Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Consequently, conditioning for reproducibility must ast, necessity be used for general purchase speci? Start the test as soon as possible, but do not allow more than 1? Link to Active This link will always route to the current Active version adtm the standard.
Selection of Conditioning Procedure Originally approved in This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?