M00018172
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ISO FDIS 844 2014 Edition, March 6, 2014 RIGID CELLULAR PLASTICS - DETERMINATION OF COMPRESSION PROPERTIES
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Availability date: 07/14/2021
Description / Abstract:
This International Standard 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.
NOTE Compressive strength (at maximum load) can be determined
either with Procedure A and B