ASTM D1621-10
(Test Method)Standard Test Method for Compressive Properties Of Rigid Cellular Plastics
Standard Test Method for Compressive Properties Of Rigid Cellular Plastics
SIGNIFICANCE AND USE
This test method provides information regarding the behavior of cellular materials under compressive loads. Test data is obtained, and from a complete load-deformation curve it is possible to compute the compressive stress at any load (such as compressive stress at proportional-limit load or compressive strength at maximum load) and to compute the effective modulus of elasticity.
Compression tests provide a standard method of obtaining data for research and development, quality control, acceptance or rejection under specifications, and special purposes. The tests cannot be considered significant for engineering design in applications differing widely from the load - time scale of the standard test. Such applications require additional tests such as impact, creep, and fatigue.
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, or a combination thereof, covered in the materials specification shall take precedence over those mentioned in this test method. If there are no material specifications, then the default conditions apply.
SCOPE
1.1 This test method describes a procedure for determining the compressive properties of rigid cellular materials, particularly expanded plastics.
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 and health practices and determine the applicability of regulatory limitations prior to use.
Note 1—This test method and ISO 844 are technically equivalent.
General Information
Relations
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D1621 − 10
StandardTest Method for
1
Compressive Properties of Rigid Cellular Plastics
This standard is issued under the fixed designation D1621; 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* 3.1.2 compliance correction—an analytical method of
modifying test instrument displacement values to eliminate the
1.1 This test method describes a procedure for determining
amount of that measurement attributed to test instrument
the compressive properties of rigid cellular materials, particu-
compliance.
larly expanded plastics.
3.1.3 compressive deformation—the decrease in length pro-
1.2 The values stated in SI units are to be regarded as the
duced in the gage length of the test specimen by a compressive
standard. The values in parentheses are for information only.
load expressed in units of length.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.1.4 compressive strain—the dimensionless ratio of com-
responsibility of the user of this standard to establish appro-
pressive deformation to the gage length of the test specimen or
priate safety and health practices and determine the applica-
the change in length per unit of original length along the
bility of regulatory limitations prior to use.
longitudinal axis.
NOTE 1—This test method and ISO 844 are technically equivalent.
3.1.5 compressive strength—the stress at the yield point if a
yield point occurs before 10 % deformation (as in Fig. 1a) or,
2. Referenced Documents
in the absence of such a yield point, the stress at 10 %
2
2.1 ASTM Standards:
deformation (as in Fig. 1b).
D618 Practice for Conditioning Plastics for Testing
3.1.6 compressive stress (nominal)—the compressive load
E4 Practices for Force Verification of Testing Machines
perunitareaofminimumoriginalcrosssectionwithinthegage
E83 Practice for Verification and Classification of Exten-
boundaries, carried by the test specimen at any given moment,
someter Systems
expressed in force per unit area.
E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
3.1.7 compressive stress-strain diagram—a diagram in
2.2 ISO Standard: which values of compressive stress are plotted as ordinates
ISO 844 Cellular Plastics—Compression Test of Rigid Ma-
against corresponding values of compressive strain as abscis-
3
terials sas.
3.1.8 compressive yield point—the first point on the stress-
3. Terminology
strain diagram at which an increase in strain occurs without an
3.1 Definitions:
increase in stress.
3.1.1 compliance—the displacement difference between test
3.1.9 deflectometer—adeviceusedtosensethecompressive
machinedrivesystemdisplacementvaluesandactualspecimen
deflection of the specimen by direct measurement of the
displacement.
distance between the compression platens.
3.1.10 displacement—compression platen movement after
1
This test method is under the jurisdiction ofASTM Committee D20 on Plastics
the platens contact the specimen, expressed in millimetres or
and is the direct responsibility of Subcommittee D20.22 on Cellular Materials -
Plastics and Elastomers.
inches.
Current edition approved April 1, 2010. Published April 2010. Originally
approved in 1959. Last previous edition approved in 2004 as D1621 - 04a. DOI: 3.1.11 gage length—the initial measured thickness of the
10.1520/D1621-10.
test specimen expressed in units of length.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3.1.12 modulus of elasticity—the ratio of stress (nominal) to
Standards volume information, refer to the standard’s Document Summary page on
corresponding strain below the proportional limit of a material
the ASTM website.
3
expressed in force per unit area based on the minimum initial
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. cross-sectional area.
*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
---------------------- Page: 1 ----------------------
D1621 − 10
X = 10 % CORE DEFORMATION
1
X = DEFLECTION (APPROXIMATELY 13 %)
2
FIG. 1 a Compressive Strength (See 3.1.5 and Section 9) FIG. 1 b Compressive Strength (See 3.1.5 and Section 9)
3.1.13 proportional limit—the greatest stress that a material unif
...
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:D1621–04a Designation:D1621–10
Standard Test Method for
1
Compressive Properties of Rigid Cellular Plastics
This standard is issued under the fixed designation D1621; 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 Department of Defense.
1. Scope*
1.1 This test method describes a procedure for determining the compressive properties of rigid cellular materials, particularly
expanded plastics.
1.2 The values stated in SI units are to be regarded as the standard. The values in bracketsparentheses 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 and health practices and determine the applicability of regulatory
limitations prior to use.
NOTE 1—This test method and ISO 844 are technically equivalent.
2. Referenced Documents
2
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
E4 Practices for Force Verification of Testing Machines
E83 Practice for Verification and Classification of Extensometer Systems
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 ISO Standard:
3
ISO 844 Cellular Plastics—Compression Test of Rigid Materials
3. Terminology
3.1 Definitions:
3.1.1 compliance—the displacement difference between test machine drive system displacement values and actual specimen
displacement.
3.1.2 compliance correction—an analytical method of modifying test instrument displacement values to eliminate the amount
of that measurement attributed to test instrument compliance.
3.1.3 compressive deformation—the decrease in length produced in the gage length of the test specimen by a compressive load
expressed in units of length.
3.1.4 compressive strain—the dimensionless ratio of compressive deformation to the gage length of the test specimen or the
change in length per unit of original length along the longitudinal axis.
3.1.5 compressive strength—the stress at the yield point if a yield point occurs before 10 % deformation (as in Fig. 1a) or, in
the absence of such a yield point, the stress at 10 % deformation (as in Fig. 1b).
3.1.6 compressive stress (nominal)—the compressive load per unit area of minimum original cross section within the gage
boundaries, carried by the test specimen at any given moment, expressed in force per unit area.
3.1.7 compressive stress-strain diagram—a diagram in which values of compressive stress are plotted as ordinates against
corresponding values of compressive strain as abscissas.
3.1.8 compressive yield point—the first point on the stress-strain diagram at which an increase in strain occurs without an
increase in stress.
1
This test method is under the jurisdiction ofASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.22 on Cellular Materials - Plastics
and Elastomers.
Current edition approved Oct.April 1, 2004.2010. Published October 2004.April 2010. Originally approved in 1959. Last previous edition approved in 2004 as
D1621 - 04a. DOI: 10.1520/D1621-04A.10.1520/D1621-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. 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
---------------------- Page: 1 ----------------------
D1621–10
X = 10 % CORE DEFORMATION
1
X = DEFLECTION (APPROXIMATELY 13 %)
2
FIG. 1 a Compressive Strength (See 3.1.5 and Section 9) FIG. 1 b Compressive Strength (See 3.1.5 and Section 9)
3.1.9 deflectometer—a device used to sense the compressive deflection of the specimen by direct measurement of the distance
between the compression platens.
3.1.10 displacement—compression platen movement after the platens contact the specimen, expressed in millimetres or inches.
3.1.11 gage length—the initial
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.