ASTM E831 PDF

Coefficient of Linear Thermal Expansion by TMA or Dilatometer ASTM E, ASTM D, ISO Scope: Linear Thermal Expansion is used to determine . This standard is issued under the fixed designation E; the 1 This test method is under the jurisdiction of ASTM Committee E37 on Thermal. ASTM E Linear Thermal Expansion of Solid Materials by Thermomechanical Analysis_机械/仪表_工程科技_专业资料。Designation: E

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ASTM E Linear Thermal Expansion of Solid Materials by Thermomechanical Analysis_百度文库

Place the specimen temperature sensor in contact with the specimen or as near to the specimen as possible. This standard is subject xstm revision at any time by the responsible technical committee and must be reviewed every?

The temperature range may be extended depending upon the instrumentation and calibration materials used.

Maximum xstm in the calculated coefficient of linear thermal expansion may be estimated from the imprecisions in the individual measurements by the following equation. The observed expansion must be corrected for the difference in expansion between the specimen holder and probe obtained from a blank run in which no sample or a specimen of the material of construction of the probe is run.

Coefficient of Linear Thermal Expansion ASTM E, ASTM D, ISO

Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and aatm processes. It is the responsibility of the user to determine the necessary equivalency prior to use. It is the responsibility of the user of this standard to establish appro- This test method is under the jurisdiction of ASTM Committee E37 on Thermal Measurements and is the direct responsibility of Subcommittee E Retest of a specimen may be used only as reference and shall not be treated as an independent test of a new specimen.

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Users of this test method are expressly advised that all such instruments or techniques may not be equivalent. The effects of specimen temperature gradients may be compensated for by correction found through the wstm of suitable reference materials whose size and thermal conductivity are close to that of the test specimen. The temperature range may be extended depending upon the instrumentation and calibration materials used.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Active view current version of standard.

In a TMA, the specimen is placed in the holder at room temperature. Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. Standards can be obtained from appropriate standards authorities. 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 The test method may be used at lower or negative expansion levels with decreased accuracy and precision see Section Send us a request Need help or have a question? Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. E Terminology Relating to Thermophysical Properties.

Coefficient of Linear Thermal Expansion ASTM E831, ASTM D696, ISO 11359

E Terminology Relating to Thermophysical Properties. NOTE 5—Direct readout of zero position and specimen length using the analyzer sensing element, where available, with a sufficient range has been found to be an accurate means of length determination.

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Work Item s – proposed revisions of this standard. Link to Active This link will always route to the current Active version of the standard. For the dilatometer, the test sample should be approximately The test method may be used at lower or negative expansion levels with decreased accuracy and precision see Section Material Testing Coefficient of Expansion,?

The coefficient of linear thermal expansion can be calculated from these recorded data. The specimen is heated at a specified rate, often ten degrees a minute, over the desired temperature range. Other lengths may be used, but shall be noted in the report. Current edition approved March 15, The measured DL for the specimen should normally be corrected for this instrument baseline, especially for low expansion specimens.

Users asfm 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. The coefficient of linear thermal expansion is calculated between the desired temperature ranges. The height is measured by the probe. Note 1 Users of this test method are expressly advised that all such instruments or techniques may not be equivalent.