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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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This standard has been approved for use by agencies of the Department of Defense. Start the tests immediately and complete them as soon as possible.

Standard Procedures for Conditioning Prior to Test 8. Originally approved in Specimens should only be removed from the water as the tests are ready to be conducted. November 1, 1 Added Note Additional measurements astn be made throughout the area to show compliance to the temperature and relative humidity required.

ISO describes only two temperature and humidity conditions for conditioning or testing, or both. Tests at Normal Temperatures 9. Work Item s – proposed revisions of this standard.

astm d standard practice for conditioning pl_百度文库

NOTE 11—A considerable number of other procedures dd618 might be considered as functional are outlined in Practice D NOTE 10—Constant relative humidity can be obtained only by careful temperature control. Refer to the material specification before using this practice. D Specification for Laminated Thermosetting Materials.

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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.

ASTM D618 – Standard Practice for Conditioning Plastics for Testing

Tests at Other Standard Test Temperatures Designations for Conditioning 7. Historical Version s – view previous versions of standard. Refer to the material speci?

Procedures for maintaining close tolerances are described in Practice E 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. NOTE 12—It has been found that, for atsm tests and materials, more reliable data are obtained in enclosures with circulating air rather than still air.

Temperature and relative humidity tolerances shall be in accordance with Section 3, unless otherwise 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. Treat test specimens over 7 mm in thickness as above, except that the minimum time shall be 88 h.

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. The material specification takes precedence over this practice.

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In such cases enclosures with circulating air should be used. Consequently, conditioning for reproducibility must of necessity be used for general purchase speci?

ASTM D Practice for Conditioning Plastics for Testing

A superscript epsilon e indicates an editorial change since the last revision or reapproval. Your comments are invited either for revision of this f618 or for additional standards and should be addressed to ASTM International Headquarters. When d681 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.

A number in parentheses indicates the year of last reapproval.

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

Start the test as soon as possible, but do not allow more than 1?

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