ASTM D2126-20

Standard Test Method for Response of Rigid Cellular Plastics to Thermal and Humid Aging

SIGNIFICANCE AND USE
4.1 Because of the wide variety of potential uses of rigid cellular plastics, artificial exposure to estimate the effective behavior of these materials must be based, to a great extent, on the intended application. Toward this end, this test method is intended to recommend a variety of conditions from which one or more of the desired exposure conditions can be selected. (Note 3)  
4.2 The conditions recommended in this test method have been widely used in artificially exposing rigid cellular plastics and in determining the effects of various temperatures and humidities on these materials. Final test measurements are determined after the specimens return to room temperature. Where specified, the specimens will be tested at the exposure condition, but must be reported as such.  
4.3 Dimensional changes measured by this test method can be used to compare the performance of materials in a particular environment, to assess the relative stability of two or more cellular plastics, or to specify an acceptance criterion for a particular material. The results of this test method are not suitable for predicting end-use product performance or characteristics, nor are they adequate for engineering or design calculations.
Note 3: Where thermal shock is known or suspected to occur due to rapid heating to (or cooling from) a particular temperature, guidance on the permissible heating or cooling rates, or both, shall be obtained from the manufacturer of the material concerned.
Note 4: The dimensional change of a specimen can vary depending upon the age of the sample or the length of time between specimen preparation and the beginning of the test, or both.  
4.4 Before proceeding with this test method, reference shall be made to the specification of the material being tested. Any test specimen preparation, conditioning, dimensions, or testing parameters covered in the materials specification, or combination thereof, shall take precedence over those mentioned in this test metho...
SCOPE
1.1 This test method covers procedures for the thermal and humid exposure of rigid cellular plastics. Conditions used shall be agreed upon between the purchaser and the supplier.  
Note 1: A list of commonly used exposure conditions is found in Table 1.  
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 2: This test method is equivalent to ISO 2796 in the sampling and calculation sections. It is not equivalent to ISO 2796 in the procedure section.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Nov-2020
• ICS: 83.100 - Cellular materials
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.22 - Cellular Materials - Plastics and Elastomers

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D2126 − 20
Standard Test Method for
Response of Rigid Cellular Plastics to Thermal and Humid
1
Aging
This standard is issued under the fixed designation D2126; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 2.2 ISO Standard:
ISO 2796 Cellular Plastics Rigid-Test for Dimensional Sta-
1.1 This test method covers procedures for the thermal and
3
bility
humid exposure of rigid cellular plastics. Conditions used shall
be agreed upon between the purchaser and the supplier.
3. Terminology
NOTE 1—A list of commonly used exposure conditions is found in
3.1 Terms used in this standard are defined in accordance
Table 1.
with Terminology D883, unless otherwise specified. For terms
1.2 The values stated in SI units are to be regarded as the
relating to precision and bias and associated issues, the terms
standard. The values in parentheses are for information only.
used in this standard are defined in accordance with Terminol-
ogy E456.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Significance and Use
responsibility of the user of this standard to establish appro-
4.1 Because of the wide variety of potential uses of rigid
priate safety, health, and environmental practices and deter-
cellular plastics, artificial exposure to estimate the effective
mine the applicability of regulatory limitations prior to use.
behavior of these materials must be based, to a great extent, on
NOTE 2—This test method is equivalent to ISO 2796 in the sampling
the intended application. Toward this end, this test method is
and calculation sections. It is not equivalent to ISO 2796 in the procedure
intended to recommend a variety of conditions from which one
section.
or more of the desired exposure conditions can be selected.
1.4 This international standard was developed in accor-
(Note 3)
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 4.2 The conditions recommended in this test method have
been widely used in artificially exposing rigid cellular plastics
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical and in determining the effects of various temperatures and
humidities on these materials. Final test measurements are
Barriers to Trade (TBT) Committee.
determined after the specimens return to room temperature.
Where specified, the specimens will be tested at the exposure
2. Referenced Documents
condition, but must be reported as such.
2
2.1 ASTM Standards:
4.3 Dimensional changes measured by this test method can
D883 Terminology Relating to Plastics
be used to compare the performance of materials in a particular
D1037 Test Methods for Evaluating Properties of Wood-
environment, to assess the relative stability of two or more
Base Fiber and Particle Panel Materials
cellular plastics, or to specify an acceptance criterion for a
E456 Terminology Relating to Quality and Statistics
particular material. The results of this test method are not
suitable for predicting end-use product performance or
characteristics, nor are they adequate for engineering or design
1
This test method is under the jurisdiction ofASTM Committee D20 on Plastics
calculations.
and is the direct responsibility of Subcommittee D20.22 on Cellular Materials -
Plastics and Elastomers.
NOTE 3—Where thermal shock is known or suspected to occur due to
Current edition approved Dec. 1, 2020. Published December 2020. Originally
rapid heating to (or cooling from) a particular temperature, guidance on
approved in 1962. Last previous edition approved in 2015 as D2126 - 15. DOI:
the permissible heating or cooling rates, or both, shall be obtained from
10.1520/D2126-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United Stat
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2126 − 15 D2126 − 20
Standard Test Method for
Response of Rigid Cellular Plastics to Thermal and Humid
1
Aging
This standard is issued under the fixed designation D2126; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This test method covers procedures for the thermal and humid exposure of rigid cellular plastics. Conditions used shall be
agreed upon between the purchaser and the supplier.
NOTE 1—A list of commonly used exposure conditions is found in Table 1.
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
NOTE 2—This test method is equivalent to ISO 2796 in the sampling and calculation sections. It is not equivalent to ISO 2796 in the procedure section.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D883 Terminology Relating to Plastics
D1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel Materials
E456 Terminology Relating to Quality and Statistics
2.2 ISO Standard:
3
ISO 2796 Cellular Plastics Rigid-Test for Dimensional Stability
3. Terminology
3.1 The terms given in Terms used in this standard are defined in accordance with Terminology D883 are applicable to this test
1
This test method is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.22 on Cellular Materials - Plastics
and Elastomers.
Current edition approved Oct. 1, 2015Dec. 1, 2020. Published October 2015December 2020. Originally approved in 1962. Last previous edition approved in 20092015
as D2126 - 09.D2126 - 15. DOI: 10.1520/D2126-15.10.1520/D2126-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D2126 − 20
TABLE 1 Temperature and Relative Humidity Conditions
Temperature, °C (°F) Relative Humidity, %
−73 ± 3 (−100 ± 6) ambient
−40 ± 3 (−40 ± 6) ambient
70 ± 2 (158 ± 4) ambient
100 ± 2 (212 ± 4) ambient
150 ± 2 (302 ± 4) ambient
23 ± 2 (73 ± 4) 50 ± 5
38 ± 2 (100.0 ± 4) 97 ± 3
70 ± 2 (158 ± 4) 97 ± 3
other temperatures and humidities selected for individual needs
method., unless otherwise specified. For terms relating to precision and bias and associated issues, the terms used in this standard
are defined in accordance with Terminology E456.
4. Significance and Use
4.1 Because of the wide variety of potential uses of rigid cellular plastics, artificial exposure to estimate the effective behavior of
these materials must be based, to a great extent, on the intended application. Toward this end, this test method is intended to
recommend a variety of conditions from which one or more of the desired exposure conditions can be selected. (Note 3)
4.2 The conditions recommended in this test method have been widely used in artificially exposing rigid cellular plastics and in
determining the effects of various temperatures and humidities on these materials. Final test measurements are determined after
the specimens return to room temperature. Where specified, the specimens will be tested at the exposure condition, but
...