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Description of ASTM-D5672 2009ASTM D5672 - 09Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm (1-in.) Deflection TechniqueActive Standard ASTM D5672 | Developed by Subcommittee: D20.22 Book of Standards Volume: 08.03 ASTM D5672Significance 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 B 1 . The user of this test method shall establish the correlation between this test method and the referee method. 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.) 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 1This test method and ISO 2439 address the same subject matter, but differ in technical content.
ASTM Standards D3574 Test Methods for Flexible Cellular Materials--Slab, Bonded, and Molded Urethane Foams E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method ISO Standard ISO2439 Flexible Cellular Polymeric Materials--Determination of Hardness (Indentation Technique)Keywords flexible cellular; foam hardness ; indentation test; polyurethane; Flexible cellular materials; Foam hardness; Hardness (indentation)--plastics; Indentation force deflection (IFD) ; ICS Code ICS Number Code 83.100 (Cellular materials) DOI: 10.1520/D5672-09 ASTM International is a member of CrossRef. ASTM D5672The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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