ISO 844:2021

ISO 844:2021

March 2021
International 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

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International ISO standards

Publication date

March 2021

Number of pages

15 p.

Reference

ISO 844:2021

ICS Codes

83.100   Cellular materials

Print number

1
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)
ISO 844:2014
August 2014
International 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>

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