BS EN ISO 3386-2:1998+A1:2010 Flexible cellular polymeric materials. Determination of stress-strain characteristics in compression. High-density materials
BS EN ISO 3386-2 specifies a method for the determination of the compression stress-strain characteristics of flexible cellular polymeric materials of density greater than 250 kg/m3.
The compression stress-strain characteristic is a measure of the load-bearing properties of the material, though not necessarily of its capacity to sustain a long-term load.
The compression stress-strain characteristic differs from the indentation hardness characteristics (as determined in accordance with ISO 2439) which are known to be influenced by the thickness and the tensile properties of the flexible cellular material under test, the shape of the compression plate, and the shape and size of the test piece.
BS EN ISO 3386-2 is a general method for testing denser flexible cellular materials (i.e. expanded cellular rubbers), measurements being made on one of more points on the steeply rising part of the stress-strain curve. The shape factor of the test piece is important and comparative test results can only be obtained on test pieces having the same shape factor.
For comparison purposes, the method may be used for material of 150 kg/m3 density or greater.
Contents of BS EN ISO 3386-2:
1 Scope
2 Normative references
3 Definitions
4 Apparatus
5 Test piece
6 Procedure
7 Expression of results
8 Repeat tests
9 Test report
Annex ZA (normative) Normative references to international publications with their relevant European publications
