NF EN ISO 844

NF EN ISO 844

April 2021
Standard Current

Rigid cellular plastics - Determination of compression properties

This document specifies methods for determining the compressive strength and corresponding relative deformation, the compressive stress at 10 % relative deformation, and the compressive modulus of rigid cellular plastics.

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Main informations

Collections

National standards and national normative documents

Publication date

April 2021

Number of pages

22 p.

Reference

NF EN ISO 844

ICS Codes

83.100   Cellular materials

Classification index

T56-101

Print number

1

International kinship

ISO 844:2021

European kinship

EN ISO 844:2021
Sumary
Rigid cellular plastics - Determination of compression properties

This document specifies methods for determining the compressive strength and corresponding relative deformation, the compressive stress at 10 % relative deformation, and the compressive modulus of rigid cellular plastics.

Replaced standards (1)
NF EN ISO 844
October 2014
Standard Cancelled
Rigid cellular plastics - Determination of compression properties

ISO 844:2014 specifies a method of determining a) the compressive strength and corresponding relative deformation, or b) the compressive stress at 10 % relative deformation, and c) when desired, the compressive modulus of rigid cellular plastics. There are two procedures: - Procedure A employs crosshead motion for determination of compressive properties. Procedure A is intended to be used when compressive stress at 10 % relative deformation has to be determined. - Procedure B employs strain measuring devices mounted on the specimen (contact extensometer) or similar device which measures directly sample deformation. Procedure B is intended to be used when compressive modulus has to be determined.

Table of contents
  • Avant-propos
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 5 Principe
  • 6 Appareillage
  • 7 Éprouvettes
  • 8 Mode opératoire
  • 9 Expression des résultats
  • 10 Fidélité
  • 11 Rapport d'essai
  • Annexe A (informative) Remarques sur la détermination du module en compression
  • Bibliographie
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