ASTM D5672-09

Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm (1-in.) Deflection Technique

SIGNIFICANCE AND USE
The 25-mm (1-in.) deflection IFD method is recommended for production screening and quality control on full size cushions only.
Applicable cushion thicknesses to be tested by this test method are only those listed in this test method. Further research and development are required before this test method will be applicable to other cushion thicknesses.
This test method is designed to give a value approximating the 25 % IFD on a 100-mm (4-in.) thick piece of foam when the actual specimen thickness tested is within the ranges listed in the test method. In case of disagreement, the referee method is the IFD procedure in Test Methods D 3574, Test B1. The user of this test method shall establish the correlation between this test method and the referee method.
SCOPE
1.1 This test method covers a screening type quality control test used to determine if flexible polyurethane foam cushions are within the specified grade range for firmness.
1.2 This test method is limited to foams with thicknesses that are 75 mm (3 in.) or greater.
1.3 This test method is based on the fact that the traditional industry standard thickness for Indentation Force Deflection (IFD) is 100 mm (4 in.), and the traditional percent deflection for IFD acceptance and product planning is 25 %. With respect then to these traditional industry conventions, a 25 % deflection on a 100-mm (4-in.) cushion would be 25 mm (1 in.). Thus, deflecting proper thickness cushions 25 mm (1 in.) will determine if the flexible polyurethane foam is within the specified grade range for 25 % IFD.
1.4 Cushion thicknesses less than 75 mm (3 in.) shall not be tested for IFD using this test method.
1.5 This test method is intended to provide a quick and simple method to screen flexible polyurethane foams for determination of its firmness grade.
1.6 The values stated in SI units are to be regarded as standard.
1.7 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 2439 address the same subject matter, but differ in technical content.

General Information

• Status: Historical
• Publication Date: 31-Aug-2009
• ICS: 83.100 - Cellular materials
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.22 - Cellular Materials - Plastics and Elastomers

Relations

• Replaces: ASTM D5672-03 - Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm (1-in.) Deflection Technique
• Effective Date: 01-Sep-2009
• Referred By: ASTM F2970-22 - Standard Practice for Design, Manufacture, Installation, Operation, Maintenance, Inspection and Major Modification of Trampoline Courts
• Effective Date: 01-Sep-2009

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: D5672 −09
StandardTest Method for
Testing Flexible Cellular Materials Measurement of
Indentation Force Deflection Using a 25-mm (1-in.)
1
Deflection Technique
This standard is issued under the fixed designation D5672; 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.
1. Scope* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers a screening type quality control
D3574 Test Methods for Flexible Cellular Materials—Slab,
test used to determine if flexible polyurethane foam cushions
Bonded, and Molded Urethane Foams
are within the specified grade range for firmness.
E691 Practice for Conducting an Interlaboratory Study to
1.2 This test method is limited to foams with thicknesses
Determine the Precision of a Test Method
that are 75 mm (3 in.) or greater.
2.2 ISO Standard:
ISO 2439 Flexible Cellular Polymeric Materials—
1.3 This test method is based on the fact that the traditional
Determination of Hardness (Indentation Technique)
industry standard thickness for Indentation Force Deflection
2.3 Method for IFD, Chapter 4.0,
(IFD) is 100 mm (4 in.), and the traditional percent deflection
“Flexible Polyurethane Foam Standards and Guidelines,”
for IFD acceptance and product planning is 25 %.With respect
Joint Industry Foam Standards and Guidelines Commit-
3
then to these traditional industry conventions, a 25 % deflec-
tee
tion on a 100-mm (4-in.) cushion would be 25 mm (1 in.).
3. Terminology
Thus, deflecting proper thickness cushions 25 mm (1 in.) will
determine if the flexible polyurethane foam is within the
3.1 This test method is based on Test Methods D3574, Test
specified grade range for 25 % IFD.
B . Refer to Test Methods D3574 for terminology used in this
1
test method.
1.4 Cushion thicknesses less than 75 mm (3 in.) shall not be
tested for IFD using this test method.
4. Significance and Use
1.5 This test method is intended to provide a quick and 4.1 The 25-mm (1-in.) deflection IFD method is recom-
simple method to screen flexible polyurethane foams for mended for production screening and quality control on full
size cushions only.
determination of its firmness grade.
4.2 Applicable cushion thicknesses to be tested by this test
1.6 The values stated in SI units are to be regarded as
method are only those listed in this test method. Further
standard.
research and development are required before this test method
1.7 This standard does not purport to address all of the
will be applicable to other cushion thicknesses.
safety concerns, if any, associated with its use. It is the
4.3 This test method is designed to give a value approxi-
responsibility of the user of this standard to establish appro-
mating the 25 % IFD on a 100-mm (4-in.) thick piece of foam
priate safety and health practices and determine the applica-
when the actual specimen thickness tested is within the ranges
bility of regulatory limitations prior to use.
listed in the test method. In case of disagreement, the referee
method is the IFD procedure in Test Methods D3574, Test B .
NOTE 1—This test method and ISO 2439 address the same subject
1
matter, but differ in technical content. The user of this test method shall establish the correlation
between this test method and the referee method.
1 2
This test method is under the jurisdiction ofASTM Committee D20 on Plastics For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and is the direct responsibility of Subcommittee D20.22 on Cellular Materials - contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Plastics and Elastomers. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Sept. 1, 2009. Published September 2009. Originally the ASTM website.
3
approved in 1995. Last previous edition approved in 2003 as D5672 - 03. DOI: Available from the Polyurethane FoamAssociation (PFA), 334 Lakeside Plaza
10.1520/D5672-09. Loudon, TN 37774, http://www.pfa.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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D5672 − 09
5. Apparatus 200 mm (8 in.) diameter presser foot into the foam exactly 25
mm (1 in.). After 60 6 3 s read the 25 mm (1 in.) deflection
5.1 TheapparatususedfordeterminingIFDinTestMethods
IFD from the force gage in N (lb).
D3574, Test B is used for this test method.
1
7.2 For test specimens 100 mm (4 in.) to 165 mm (6.5 in.)
6. Conditioning
in thickness:
7.2.1 On 100 mm (4 in.) to 165 mm
...

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:D5672–03 Designation: D 5672 – 09
Standard Test Method for
Testing Flexible Cellular Materials Measurement of
Indentation Force Deflection Using a 25-mm [1-in.](1-in.)
1
Deflection Technique
This standard is issued under the fixed designation D 5672; 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.
1. Scope*
1.1 This test method covers a screening type quality control test used to determine if flexible polyurethane foam cushions are
within the specified grade range for firmness.
1.2 This test method is limited to foams with thicknesses that are 75 mm [3 in.](3 in.) or greater.
1.3 This test method is based on the fact that the traditional industry standard thickness for Indentation Force Deflection (IFD)
is 100 mm [4 in.],(4 in.), and the traditional percent deflection for IFD acceptance and product planning is 25 %.With respect then
to these traditional industry conventions, a 25 % deflection on a 100-mm [4-in.](4-in.) cushion would be 25 mm [1 in.].(1 in.).
Thus, deflecting proper thickness cushions 25 mm [1 in.](1 in.) will determine if the flexible polyurethane foam is within the
specified grade range for 25 % IFD.
1.4 Cushion thicknesses less than 75 mm [3 in.](3 in.) shall not be tested for IFD using this test method.
1.5 This test method is intended to provide a quick and simple method to screen flexible polyurethane foams for determination
of its firmness grade.
1.6
1.6 The values stated in SI units are to be regarded as standard.
1.7 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.
NOTE1—ISO 2439 is a similar test, but there are technical differences. 1—This test method and ISO 2439 address the same subject matter, but differ
in technical content.
2. Referenced Documents
2
2.1 ASTM Standards:
D 3574 Methods ofTesting Flexible Cellular Materials—Slab, Bonded, and Molded Urethane FoamsTest Methods for Flexible
Cellular MaterialsSlab, Bonded, and Molded Urethane Foams
E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 ISO Standard:
ISO 2439 Flexible Cellular Polymeric Materials—Determination of Hardness (Indentation Technique)
2.3 Method for IFD, Chapter 4.0,
3
“Flexible Polyurethane Foam Standards and Guidelines,” Joint Industry Foam Standards and Guidelines Committee
3. Terminology
3.1 This test method is based on Test Methods D 3574, Test B . Refer to Test Methods D 3574 for terminology used in this test
1
method.
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 March 10, 2003. Published April 2003. Originally approved in 1995. Last previous edition approved in 1995 as D5672-95.
Current edition approved Sept. 1, 2009. Published September 2009. Originally approved in 1995. Last previous edition approved in 2003 as D 5672 - 03.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book ofASTM Standards
, Vol 09.02.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Annual Book of ASTM Standards, Vol 14.02.
3
Available from the Polyurethane Foam Association (PFA), 334 Lakeside Plaza Loudon, TN 37774, http://www.pfa.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 ----------------------
D5672–09
4. Significance and Use
4.1 The 25-mm [1-in.](1-in.) deflection IFD method is recommended for production screening and quality control on full size
cushions only.
4.2 Applicable cushion thicknesses to be tested by this test method are only those listed in this test method. Further research
and development are required before this test method will be applicable to other cushion thicknesses.
4.3 This test method is d
...