NF EN ISO 844

NF EN ISO 844

October 2009
Standard Cancelled

Rigid cellular plastics - Determination of compression properties

ISO 844:2007 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.

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Collections

National standards and national normative documents

Publication date

October 2009

Number of pages

14 p.

Reference

NF EN ISO 844

ICS Codes

83.100   Cellular materials

Classification index

T56-101

Print number

1 - 15/09/2009

International kinship

ISO 844:2007

European kinship

EN ISO 844:2009
Sumary
Rigid cellular plastics - Determination of compression properties

ISO 844:2007 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.

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

<p>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.</p> <p>There are two procedures:</p> <p>- 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.</p> <p>- 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.</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
    7
  • 11 Rapport d'essai
    8
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