NF EN ISO 844

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.

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Main informations

Collections

National standards and national normative documents

Publication date

October 2014

Number of pages

16 p.

Reference

NF EN ISO 844

ICS Codes

83.100   Cellular materials

Classification index

T56-101

Print number

1

International kinship

ISO 844:2014

European kinship

EN ISO 844:2014
Sumary
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.

Replaced standards (1)
NF EN ISO 844
October 2009
Standard Cancelled
Rigid cellular plastics - Determination of compression properties

<p>ISO 844:2007 specifies a method of determining</p> <p>a) the compressive strength and corresponding relative deformation</p> <p>or</p> <p>b) the compressive stress at 10 % relative deformation</p> <p>and</p> <p>c) when desired, the compressive modulus</p> <p>of rigid cellular plastics.</p>

Standard replaced by (1)
NF EN ISO 844
April 2021
Standard Current
Rigid cellular plastics - Determination of compression properties

<p>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.</p>

Table of contents
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  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Symboles et termes abrégés
    2
  • 5 Principe
    2
  • 6 Appareillage
    3
  • 7 Éprouvettes
    3
  • 8 Mode opératoire
    4
  • 9 Expression des résultats
    5
  • 10 Fidélité
    8
  • 11 Rapport d'essai
    8
  • Bibliographie
    10
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