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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Last previous edition approved in as E — E — 06 ambient temperature, accompanying a unit change in temperature identi? Users of this test method are expressly advised that all such instruments or techniques may not be equivalent. Place the specimen temperature sensor in contact with the specimen or as near to the specimen as possible.
Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Alternatively, a dilatometer can be used. Specimens that do not meet these requirements may result in increased imprecision. 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.
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High heating rates, large specimen sizes, and low specimen thermal conductivity may lead to large specimen temperature gradients. In the case of dispute, only the manual procedures described in this test method are to be considered valid. Enabling you to identify and mitigate the ast, risk in your operations, supply chains and business processes.
Coefficient of Linear Thermal Expansion ASTM E831, ASTM D696, ISO 11359
The temperature range may be extended depending upon asttm instrumentation and calibration materials used. Related information can be found in Refs. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? 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.
Retest of a specimen may be used only as reference and shall ast be treated as an independent test of a new specimen. Related information can be found in Refs. Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Users of this test method are expressly advised that all such instruments or techniques may not be aatm.
The effects of specimen temperature gradients may be compensated for by correction found through the use of suitable aetm materials whose size and thermal conductivity are close to that of the test specimen. E Terminology Relating to Thermophysical Properties. This test can be used for design purposes and to determine if failure by thermal stress may occur.
This test method uses a smaller specimen and substantially different apparatus than Test Methods E and D Certification Formally confirming that your products and services meet all trusted external and internal standards. A number in parentheses indicates the year of last reapproval. The measured DL for the specimen should normally be corrected for this instrument baseline, especially for low expansion specimens.
Standards can be obtained from appropriate standards authorities. NOTE 7—For best results, specimen temperature gradients should be small. E Terminology Relating to Thermophysical Properties.
Coefficient of Linear Thermal Expansion ASTM E, ASTM D, ISO
Work Item s – proposed revisions of this standard. The specimen must be flat on both ends. Active view current version of standard. Through our network of over 43, people in 1, laboratories and offices in astj, Intertek provides quality and safety solutions to a wide range of industries around the world. For the TMA, the test specimen should be between 2 and 10 mm. 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.
Lateral dimensions shall not exceed 10 mm. Other lengths may be used, but shall be noted in the report. Global Reach Intertek is the industry leader with over 42, people in 1, locations in over r831. The last approved version of this asttm standard is referenced on www.
It is the responsibility of wstm 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. Assurance Testing Inspection Certification. The furnace is raised and the temperature is brought to 20 degrees below the lowest temperature of interest.
Depending on the compressibility of the specimen and asttm temperature range to be investigated, a force of between 1 and mN 0.
Current edition approved March 15, Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. It is the responsibility of the user to determine the necessary equivalency prior to use. Active view current version of standard.
Summary of Test Method 4. Where some heat or mechanical treatment is applied to the specimen prior to test, this should be noted in the report. Link to Active This link will always route to the current Active version of the standard.