ASTM D 5672 Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm (1-in.) Deflection Technique
 |
| Purchase Information |
| Use this form to request purchase information on ASTM online subscriptions. |
|
|
Document ASTM D 5672 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
You may also purchase this document alone from the IHS Standards Store.
ASTM D 5672 Document Information:
Title
Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm (1-in.) Deflection Technique
ASTM International
Publication Date:
Mar 10, 2003
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.
Keywords:
- flexible cellular
- foam hardness
- indentation test
- polyurethane
About IHS
IHS (NYSE: IHS) is a leading global provider of critical technical information, decision-support tools and related services in a number of industries including aerospace and defense, automotive, construction, electronics, and energy. IHS serves customers ranging from large governments and multinational corporations to smaller companies and technical professionals in more than 100 countries. IHS been in business for more than 45 years and employ more than 2,300 people around the world.
