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SFS-EN ISO 2439:en
Flexible cellular polymeric materials. Determination of hardness (indentation technique) (ISO 2439:2008)
Soveltamisala
Suomenkielistä soveltamisalaa ei ole saatavissa.
The indentation hardness of flexible cellular materials is a measure of their load-bearing properties. ISO 2439:2008 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. Annex A provides a summary of test parameters and typical force-indentation graphs obtained with these methods.
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.
ISO 2439:2008 specifies the following methods:
Method A — Determination of the 40 %/30 s indentation hardness index, which gives a single indentation measurement for laboratory test purposes;
Method B — Determination of the 25 %-40 %-65 %/30 s indentation hardness characteristics, which provides information about the shape of the hardness indentation curve;
Method C — Determination of the 40 % indentation hardness check, which is a quick procedure suitable for quality control testing;
Method D — Determination of the 25 %/20 s low indentation hardness index, which is a quick procedure suitable as an inspection test;
Method E — Determination of the compressive deflection coefficient and hysteresis loss rate, which gives additional information about the load-bearing properties of materials.
The results obtained by these methods relate only to the test conditions specified and cannot, in general, be used directly for design purposes.
Tämän julkaisun valmistelusta Suomessa vastaa Kemesta ry, puh. 040 820 4888.
The indentation hardness of flexible cellular materials is a measure of their load-bearing properties. ISO 2439:2008 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. Annex A provides a summary of test parameters and typical force-indentation graphs obtained with these methods.
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.
ISO 2439:2008 specifies the following methods:
Method A — Determination of the 40 %/30 s indentation hardness index, which gives a single indentation measurement for laboratory test purposes;
Method B — Determination of the 25 %-40 %-65 %/30 s indentation hardness characteristics, which provides information about the shape of the hardness indentation curve;
Method C — Determination of the 40 % indentation hardness check, which is a quick procedure suitable for quality control testing;
Method D — Determination of the 25 %/20 s low indentation hardness index, which is a quick procedure suitable as an inspection test;
Method E — Determination of the compressive deflection coefficient and hysteresis loss rate, which gives additional information about the load-bearing properties of materials.
The results obtained by these methods relate only to the test conditions specified and cannot, in general, be used directly for design purposes.
Tämän julkaisun valmistelusta Suomessa vastaa Kemesta ry, puh. 040 820 4888.
Sisällysluettelo
Tuoteryhmä(t)
Sidokset
Velvoittavat viittaukset
ISO 1382:2008 Rubber -- Vocabulary
ISO 23529:2004 Rubber -- General procedures for preparing and conditioning test pieces for physical test methods
ISO 7500-1:2004 Metallic materials -- Verification of static uniaxial testing machines -- Part 1: Tension/compression testing machines -- Verification and calibration of the force-measuring system
ISO 23529:2004 Rubber -- General procedures for preparing and conditioning test pieces for physical test methods
ISO 7500-1:2004 Metallic materials -- Verification of static uniaxial testing machines -- Part 1: Tension/compression testing machines -- Verification and calibration of the force-measuring system
Tekninen komitea
Vahvistuspäivä
11.05.2009
Julkaisupäivä
29.05.2009
Painos
2
Sivumäärä
18
Julkaisun kieli
englanti