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Homepage>BS Standards>13 ENVIRONMENT. HEALTH PROTECTION. SAFETY>13.220 Protection against fire>13.220.40 Ignitability and burning behaviour of materials and products>BS EN ISO 4589-2:2017 Plastics. Determination of burning behaviour by oxygen index Ambient-temperature test
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immediate downloadReleased: 2017-06-07
BS EN ISO 4589-2:2017 Plastics. Determination of burning behaviour by oxygen index Ambient-temperature test

BS EN ISO 4589-2:2017

Plastics. Determination of burning behaviour by oxygen index Ambient-temperature test

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Standard number:BS EN ISO 4589-2:2017
Pages:36
Released:2017-06-07
ISBN:978 0 580 89319 3
Status:Standard
DESCRIPTION

BS EN ISO 4589-2:2017


This standard BS EN ISO 4589-2:2017 Plastics. Determination of burning behaviour by oxygen index is classified in these ICS categories:
  • 13.220.40 Ignitability and burning behaviour of materials and products
  • 83.080.01 Plastics in general

This document specifies methods for determining the minimum volume fraction of oxygen, in admixture with nitrogen, that will support combustion of small vertical test specimens under specified test conditions. The results are defined as oxygen index (OI) values.

Methods are provided for testing materials that are self-supporting in the form of vertical bars or sheets up to 10,5  mm thick. These methods are suitable for solid, laminated or cellular materials characterized by an apparent density 100 kg/m3 or greater. The methods might also be applicable to some cellular materials having an apparent density of less than 100 kg/m3. A method is provided for testing flexible sheets or film materials while supported vertically.

For comparative purposes, a procedure is provided for determining whether or not the OI of a material lies above some specified minimum value.

NOTE It might not be possible to apply these methods satisfactorily to materials that exhibit high levels of shrinkage when heated, e.g. highly oriented thin film.