Indentation hardness of flexible cellular materials is a measure of their load-bearing properties. ISO 2439 specifies four methods (A to D) for the determination of indentation hardness and one method (E) for determination of compressive deflection coefficient and hysteresis loss rate of flexible cellular materials. These five methods are applicable only to latex foam, urethane foam and PVC foam of the open-cell type. The methods specified can be used for testing finished articles and for the characterization of bulk material.
Method A determines the 40 %/30 s indentation hardness index, which gives a single indentation measurement;
Method B determines the 25 %-40 %-65 %/30 s indentation hardness characteristics, which provides information about the shape of the hardness indentation curve;
Method C determines the 40 % indentation hardness check, which is for quality control testing;
Method D determines the 25 %/20 s low indentation hardness index, which is an inspection test;
Method E determines the compressive deflection coefficient and hysteresis loss rate, which gives additional information about the load-bearing properties of materials.
By means of our testing expertise and modular product design, we will help find the solution that is right for you. Give our test engineers a call today for help configuring the best test machine and accessories according to your standard.
Recommended Test Machine
Forces up to 10 kN (2,250 lbf)
Low force tabletop systems
Modular series of five frame options with adjustable test space
Affordable testing option for tension, compression, bend, peel and much more
Force range of 5 kN to 600 kN (1,125 lbf to 135,000 lbf)
Adjustable test space
The most popular choice for static tension and compression tests
These dual column testers are available in both tabletop and floor standing models
