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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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

This test method uses a smaller specimen and substantially different apparatus than Test Methods E and D The observed expansion must be corrected for the difference in expansion e8311 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. Note 1 Users of this test method are expressly advised that all such instruments or techniques may not be equivalent.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Global Reach Intertek is the industry leader with over 42, people in 1, locations asttm over countries.

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

Work Item s – proposed revisions of this standard. E — 06 is adequate. No further reproductions authorized. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are w831 provided as part of the standard.

The temperature range may be extended depending upon the aatm and calibration materials used. This standard does not purport to address all of the safety problems, if any, associated with its use.

NOTE 5—Direct readout of zero position and specimen length using the analyzer xstm element, where available, with a sufficient range has been found to be an accurate means of length determination. It is the responsibility of the user to determine the necessary equivalency prior to use. E Terminology Relating to Thermophysical Properties.

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The temperature range may adtm extended depending upon the instrumentation and calibration materials used. Work Item s – proposed revisions of this standard.

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. NOTE 1—Users of this test method are expressly advised that all such instruments or techniques may not be equivalent.

Active view current version of standard. High heating rates, large specimen sizes, and low specimen thermal conductivity may lead to large specimen temperature gradients. Retest of a specimen may be used only as reference and shall not be treated as an independent test of a new specimen.

E Terminology Relating to Thermophysical Properties. The specimen must be flat on both ends. Send us a request Need help or have a question?

For the dilatometer, the test sample should be approximately The furnace is raised and the temperature is brought to 20 degrees below the lowest temperature of interest. The am shall not be calculated from a temperature range in which a transition point is noted.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Place the specimen temperature sensor in contact with the specimen or as near to the specimen as possible. NOTE 3—It has been found with some materials that this level of? The refrigerant used for cooling shall not come into direct contact with the specimen. Alternatively, a dilatometer can be used.

Validating the specifications, value and safety of your raw materials, products and assets. 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. Precision and Bias 6 The test method may be used at lower or negative expansion levels with decreased accuracy and precision see Section Depending on the compressibility of the specimen and the temperature range to be investigated, a force of between 1 and mN 0.

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Unless effects of moisture are to be studied, use of dry purge gas is recommended and is essential for operation at subambient temperatures.

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

For the TMA, the test specimen should be between 2 and 10 mm. NOTE 4—Some materials, particularly composites, may require asrm treatment to condition the specimen prior to test to relieve stresses or distortions.

The actual incremental force, mass, or stress above e8311 required to make contact with zero force shall be noted in the report.

The coefficient of linear thermal expansion can be calculated from these recorded data. Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world.

In a TMA, the specimen is placed in the holder at room temperature. Link to Active This link will always route to the current Active version of the standard. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Summary of Test Method 4. Last previous edition approved in as E — Certification Asgm confirming that your products and services meet all trusted external and aatm standards. Specimens that do not meet these requirements may result in increased imprecision. 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.

Current edition awtm March 15,