UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

ASTM D5672

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

inactive
Buy Now
Organization: ASTM
Publication Date: 10 March 2003
Status: inactive
Page Count: 3
ICS Code (Cellular materials): 83.100
scope:

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.

This test method is limited to foams with thicknesses that are 75 mm [3 in.] or greater.

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.

Cushion thicknesses less than 75 mm [3 in.] shall not be tested for IFD using this test method.

This test method is intended to provide a quick and simple method to screen flexible polyurethane foams for determination of its firmness grade.

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 - ISO 2439 is a similar test, but there are technical differences.

Document History

June 1, 2015
Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm [1-in.] Deflection Technique
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. This test method is limited...
September 1, 2009
Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm (1-in.) Deflection Technique
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. This test method is limited...
ASTM D5672
March 10, 2003
Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm (1-in.) Deflection Technique
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. This test method is limited...
January 1, 1995
Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm (1-in.) Deflection Technique
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...
Advertisement