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. In these cases, d61 for materials that are not adversely affected by longer conditioning times, it is permissible to use conditioning times longer than 5 h.
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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
V618, conditioning for reproducibility must of necessity be used for general asstm speci? Specimens should only be removed from the water as the tests are ready to be conducted. Designations for Conditioning 7.
Work Item s – proposed revisions of this standard. 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.
In such cases enclosures with circulating air should be used. Tests at Other Standard Test Temperatures Table 1 in Classi? Start the test as soon 6d18 possible, but do not allow more than 1? A superscript epsilon e indicates an editorial change since the last revision or reapproval. Originally approved in Tests at Normal Temperatures 9. NOTE 11—A considerable number of other procedures that might be considered as functional are outlined in Practice D 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.
Refer to the material speci?
Other enclosures, desiccants, or desiccating techniques may be used that produce and maintain an atmosphere equivalent to that over anhydrous calcium chloride. 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. Standard Procedures for Conditioning Prior to Test 8.
In order that reliable comparisons may be made of different materials and between different aztm, 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. Link to Active This link will always route to the current Active version of the standard. 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?
Shorter conditioning times may be used for thin specimens provided equilibrium is substantially obtained. Additional measurements shall be made throughout the area to show compliance to the temperature and relative humidity required.
Refer to the material specification before using this practice. Temperature and relative humidity tolerances shall be in accordance with Section 3, unless otherwise speci?
A number in parentheses indicates the year of last reapproval. 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.
Procedures for maintaining close tolerances are described in Practice E Start the tests immediately and complete them as soon as possible. The tolerances for this procedure shall be as follows: ISO describes only two temperature and humidity conditions for conditioning or testing, or both.
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.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. This standard has been approved for use by agencies of the Department of Defense.
This standard is f618 to revision at any time by the responsible technical committee and must be reviewed every? Historical Version s – view previous versions of standard. It is the responsibility of the user of this standard to establish appropriate safety and health sstm and determine the applicability of regulatory limitations prior to use.
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