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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ASTM D Practice for Conditioning Plastics for Testing

Historical Version s – view previous versions of standard. 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 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 specimens of these materials are subjected prior to and during testing.

A number in parentheses indicates the year of last reapproval. 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.

Selection of Conditioning Procedure Current edition approved November 1, NOTE 10—Constant relative humidity can be obtained only by careful temperature control. Link to Active This 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 d68 more to ensure substantial equilibrium under normal conditions of humidity and temperature.

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This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? 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. Treat test specimens over 7 mm in thickness as above, asstm that the minimum time shall be 88 h.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but 6d18 not provided as part of the standard. ISO describes only two temperature and humidity conditions for conditioning or testing, or both.

ASTM D618 – Standard Practice for Conditioning Plastics for Testing

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. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. November 1, 1 Added Note Consequently, conditioning for reproducibility must of necessity be used for general purchase speci?

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.

Shorter conditioning times may be used for thin specimens provided equilibrium is substantially obtained. 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.

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.

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Tests at Normal Temperatures 9. 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. This standard has been approved for use by agencies of the Department d6618 Defense.

Table 1 in Classi? Originally approved in Start the test as soon as possible, but do not allow more than 1?

ASTM D – 13 Standard Practice for Conditioning Plastics for Testing

Start the tests immediately and complete them as soon as possible. Refer to the material f618 before using this practice. Consequently, conditioning for reproducibility must of necessity be used for general purchase specifications and product control tests.

Procedures for maintaining close tolerances are described in Practice E Specimens should only be removed from the water as the tests are ready to be conducted.

Last previous edition approved in as D – A superscript epsilon e indicates an editorial change since the last revision or reapproval. 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?

Additional measurements shall be made throughout the area to show compliance to the temperature d6618 relative humidity required.