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ISO 4589-4:2021

Plastics — Determination of burning behaviour by oxygen index — Part 4: High gas velocity test
6 pri 2021

General information

60.60     6 pri 2021

ISO

ISO/TC 61/SC 4

International Standard

13.220.40     83.080.01  

anglisht  

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Scope

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.

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PUBLISHED
ISO 4589-4:2021
60.60 Standard published
6 pri 2021

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