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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Such heat treatment must be included in the report. Specimens that do not meet these requirements may result in increased imprecision. A number in parentheses indicates the year of last reapproval. Originally approved in A graph e8331 produced.

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

The last approved version of this historical standard is referenced on www. No further reproductions authorized. Other heating rates may be used but shall be noted in the report. Global Reach Asttm is the industry leader with over 42, people in 1, locations in over countries.

E Terminology Relating to Thermophysical Properties. Lateral dimensions shall not exceed 10 mm. Other lengths may be used, but shall be noted in the report. Asym 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.

Alternatively, a dilatometer can be used. Send us a request Need help or have a question? The actual incremental force, mass, or stress above that required to make contact with zero force shall be noted in the report.

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In the case of dispute, only the manual procedures described in this test method are to be considered valid. Need help or have a question? Influence of thermal a NOTE 7—For best results, specimen temperature gradients should be small. The measured DL for the specimen should normally be corrected for this instrument baseline, especially for low expansion specimens.

Work Item s – proposed revisions of this standard.

The specimen is heated at a specified rate, often ten degrees a minute, over the desired temperature range. Certification Formally confirming that your products and qstm meet all trusted external and e8311 standards. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

This test method uses a smaller specimen and substantially different apparatus than Test Methods E and D Where some heat or mechanical treatment is applied to the e381 prior to test, this should be noted in the report. Coefficient of Linear Thermal Expansion Video Learn more about linear thermal expansion in this video. Place the specimen temperature sensor in contact with the specimen or as near to the specimen as possible.

The temperature range may be extended depending upon the instrumentation and calibration materials used. Maximum imprecision in the calculated coefficient of linear thermal expansion may be estimated from the imprecisions in the individual measurements by the following equation.

Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Aastm Terminology Relating to Thermophysical Properties. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Due to copyright restrictions, we are not able to provide copies of standards.

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The height is measured by the asm. It is the responsibility of the user to determine the necessary equivalency prior to use.

Note 1 Users of this test method are expressly advised that all such instruments or techniques may not be equivalent. Users of this test method are expressly advised that all such instruments or techniques may not be equivalent. The coefficient of linear thermal expansion can be calculated from these recorded data. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Active view current version of standard. 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. Validating the specifications, value and safety of your raw materials, products and assets.

Current edition approved March 15, Inspection Validating the specifications, value and safety of your raw materials, products and assets. In a TMA, the specimen is placed in the holder at room temperature.

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

Assurance Testing Inspection Certification. NOTE 4—Some materials, particularly composites, may require heat treatment to condition the specimen prior to test to relieve stresses or distortions. The temperature range may be extended depending upon the instrumentation and calibration materials used.