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Hlavní stránka>BS ISO 4589-4:2021 Plastics. Determination of burning behaviour by oxygen index High gas velocity test
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sklademVydáno: 2021-05-10
BS ISO 4589-4:2021 Plastics. Determination of burning behaviour by oxygen index High gas velocity test

BS ISO 4589-4:2021

Plastics. Determination of burning behaviour by oxygen index High gas velocity test

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Označení normy:BS ISO 4589-4:2021
Počet stran:38
Vydáno:2021-05-10
ISBN:978 0 539 01268 2
Status:Standard
Popis

BS ISO 4589-4:2021


This standard BS ISO 4589-4:2021 Plastics. Determination of burning behaviour by oxygen index is classified in these ICS categories:
  • 83.080.01 Plastics in general
  • 13.220.40 Ignitability and burning behaviour of materials and products

This document specifies a test method for determining the minimum volume fraction of oxygen, in admixture with nitrogen, at ambient temperature, that supports combustion of small vertical sheet test specimen under a specified gas velocity that is higher than that specified in ISO 4589-2.

NOTE

The result is expressed as a high gas velocity oxygen index (HOI).

In addition, this document specifies the testing apparatus for determining the HOI.

The test method is applicable to materials in the form of sheets up to 2 mm thick. It is also applicable to flexible sheet materials that are supported vertically by a specified specimen holder.