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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Specimens should only be removed from the water as the tests are ready to be conducted.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Note 1 — This standard and ISO address the same subject matter, but differ in technical qstm.
ASTM D618 – Standard Practice for Conditioning Plastics for Testing
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. This practice defines procedures for conditioning plastics although not necessarily to equilibrium prior to testing, and the conditions under which they shall be tested.
Dd618 standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Additional measurements shall be made throughout the area to show compliance to the temperature and relative humidity required.
The tolerances for this procedure shall be as follows: 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.
Current edition approved November 1, 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 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. Work Item s – proposed revisions of this standard.
Procedures for maintaining close tolerances are described in Practice E ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
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. Table 1 in Classi? NOTE 11—A considerable number of other procedures that might be considered as functional are outlined in Practice D Refer to the material specification before using this practice. D Specification for Laminated Thermosetting Materials.
Start the tests immediately and complete them as soon as possible. Consequently, conditioning for reproducibility must of necessity be used for general purchase ast, A number in parentheses indicates the year of last reapproval.
ASTM D – 13 Standard Practice for Conditioning Plastics for Testing
Standard Procedures for Conditioning Prior to Test 8. November 1, 1 Added Note Tests at Normal Temperatures 9. 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. 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. 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?
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.
Other enclosures, desiccants, or desiccating techniques may be used that produce and maintain an atmosphere equivalent to that over anhydrous calcium chloride. In such cases enclosures with circulating air should be used.
ASTM D – CONDITIONING PLASTICS
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. This standard has been approved for use by agencies of the Department of Defense. D168 to the material speci?
NOTE 10—Constant relative humidity can be obtained only by careful temperature control.