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ASTM F1957-99

Historical Revision

Standard Test Method for Composite Foam Hardness-Durometer Hardness

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1.1 This test method describes a type of composite foam hardness measurement device known as durometer: Type CF. The procedure for determining indentation hardness of substances comprised of two or more elastomeric materials, one of which is a foam or foam like material. These are classified as composite foam structures. The composite foam product may have an armature made of a material suitable for adding structural integrity including but not limited to metal, plastic, or wood. This construction is typical for lapbar restraints, seating, and other restraint devices, as well as some show elements.

1.2 This test method is not equivalent to other indentation hardness methods and instrument types, specifically those described in Test Methods D1415 and D2240.

1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. Many of the stated dimensions in SI are direct conversions from the U.S. customary system to accommodate the instrumentation, practices, and procedures that existed prior to the Metric Conversion Act of 1975.

1.4 All materials, instruments, or equipment used for the determination of mass or dimension shall have traceability to the National Institute for Standards and Technology (NIST) or other internationally recognized organizations.

1.5 This test method is not a safety standard as it pertains to ride legislation. The use of this test method is optional based upon an agreement between customers and suppliers of foam products.

1.6 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.


SDO ASTM: ASTM International
Document Number F1957
Publication Date Feb. 10, 1999
Language en - English
Page Count 6
Revision Level 99
Supercedes
Committee F24.10
Publish Date Document Id Type View
Nov. 1, 2024 F1957-24 Revision
Feb. 10, 1999 F1957-99 Revision
Feb. 1, 2017 F1957-99R17 Reaffirmation
Jan. 15, 2011 F1957-99R11 Reaffirmation
Oct. 1, 2004 F1957-99R04 Reaffirmation