ASTM D618 PDF

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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In order to make reliable comparisons between different materials and between different laboratories, it is necessary to standardize the d68 conditions, as well as the temperature, to which specimens of these materials are subjected prior to and during testing. 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?

ASTM D – CONDITIONING PLASTICS

November 1, 1 Added Note This standard has been approved for use by agencies of the Department of Defense. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

Historical Version s – view aetm versions of standard. The material specification takes precedence over this practice. Start the tests immediately and complete them as soon as possible. Consequently, conditioning for reproducibility must of necessity be used for general purchase specifications and product control tests.

Selection of Conditioning Procedure Link to Active This link will always route to the current Active version of the standard. Work Item s – proposed revisions of this standard.

Last previous edition approved in as D – 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. ISO describes only two temperature and humidity conditions for conditioning or testing, or both.

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Specimens should only be removed from the water as the tests are ready to be conducted. 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. ASTM International takes no position respecting the validity of any patent aastm asserted in connection with any item mentioned in this standard.

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. Precision and Bias Depending on the thickness, type ast 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. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Shorter conditioning times may be used for thin specimens provided equilibrium is substantially obtained. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

Originally approved in Designations for Conditioning 7.

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. Table 1 in Classi? Standard Procedures for Conditioning Prior to Test 8. This practice defines procedures for conditioning plastics although not necessarily to equilibrium prior to testing, and the conditions under which they shall be tested.

ASTM D618 – Standard Practice for Conditioning Plastics for Testing

Procedures for maintaining close tolerances are described in Practice E A number in parentheses indicates the year of last reapproval. Referenced Documents purchase zstm The documents listed below are referenced within the d6188 standard but are not provided as part of the standard.

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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, NOTE 11—A considerable number of other procedures that might be considered as functional are outlined in Practice D Consequently, conditioning for reproducibility must of necessity be used for general purchase speci? Treat test specimens over 7 mm in thickness as above, except that the minimum time shall be 88 h.

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. Start the test as soon as possible, but do not allow more than 1? Provide adequate air circulation on all sides of the test specimens by placing them in d6118 racks, hanging them from metal clips or laying them on wide-mesh, wire screen frames with at asym 25 mm [1 in.

Refer to the material speci? Additional measurements shall be made throughout the area awtm show compliance to the temperature and relative humidity required. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.