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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The material specification takes precedence over this practice. Aetm 1 — This standard and ISO address the same subject matter, but differ in technical content.

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

ASTM D618 – Standard Practice for Conditioning Plastics for Testing

Consequently, conditioning for reproducibility must of necessity be used for general purchase specifications and product control tests.

Selection of Conditioning Procedure 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? Treat test specimens over 7 mm in thickness as above, except that the minimum time shall be 88 h.

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.

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Your comments will receive careful consideration at a meeting of the responsible technical committee, f618 you may attend. Historical Version s – view previous versions of standard.

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Link to Active This link will always route to the current Active version of the standard. Tests at Normal Temperatures 9. This standard has been approved for use by agencies of the Department of Defense. NOTE 10—Constant relative humidity can be obtained only by careful temperature control.

Start the tests immediately and complete them as soon as possible. Originally approved in A superscript epsilon e indicates an editorial change since the last revision or reapproval.

Consequently, conditioning for reproducibility must of necessity axtm used for general purchase speci? 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. A number in parentheses indicates the year of last reapproval.

Tests at Other Standard Test Temperatures The tolerances for qstm procedure shall be as follows: ISO describes only two temperature and humidity conditions for conditioning or testing, or both. In such cases enclosures with circulating air zstm be used. Current edition approved November 1, Additional measurements shall be made throughout the area to show compliance to the temperature and relative humidity required. Last previous edition approved in as D – Work Item s – proposed revisions of this standard.

Awtm for maintaining close tolerances are described in Practice E NOTE 11—A considerable number of other procedures that might be considered as functional are outlined in Practice D Refer to the material speci? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

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Designations for Conditioning 7.

It is the responsibility of c618 user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Standard Procedures for Conditioning Prior to Test 8. Precision and Bias In order to asstm 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.

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

Start the test as soon as possible, but do not allow more than 1? Temperature and relative humidity tolerances shall be in accordance with Section 3, unless otherwise speci? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

This practice defines procedures for conditioning plastics although not necessarily to equilibrium prior to testing, and the conditions under which they shall be tested. 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.