ISO 4589-2 PDF

l’indice d’oxygène —. Partie 2: Essai à la température ambiante. STANDARD. ISO. Second edition. Reference number. ISO (E). ISO Plastics Determination of burning behaviour by oxygen index Part 2: Ambient- temperature test. ISO Burning test for Oxygen Index test. Purchase your copy of BS EN ISO as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards.

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For flexible film or sheet.

ISO Oxygen Index

By testing a series of specimens in different oxygen concentrations, the minimum oxygen concentration is estimated. Areas of use All types of plastics that are self-supporting and in the form of vertical bars or sheet up to By testing a series of specimens in different oxygen concentrations, the minimum oxygen concentration is estimated.

Example 459-2 products that can be tested according to this method Plastic material, cable insulation, duct insulation, laminate, printed circuit board. For comparative purposes, a procedure is provided for determining whether or not the oxygen index of a material lies above some specified minimum value.

4589- test series, one specified oxygen concentration. Burning test for Oxygen Index test – Scope.

The upper end of the specimen is ignited and the subsequent burning behaviour of the specimen is observed to compare the period for which burning continues, or the length of the specimen burnt, with specified limits for such burning.

If the film is very thin, it may be necessary to combine two or more films together in the preparation of the rolled film so as to obtain results similar to those nominally obtained with the specimen form Vl. When testing according to ISOthe test results will show which oxygen concentration is needed for a specific material to burn continuously.

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For particular materials or applications, it may be necessary or appropriate to specify different test conditions. Results obtained from test specimens of. A small test specimen is supported vertically in a mixture of oxygen and nitrogen flowing ido through a transparent chimney.

A method is provided for testing flexible sheet or film materials while supported vertically. The sample dimensions depend on the type of material. Test procedure A small test specimen is supported vertically in a mixture of oxygen and nitrogen flowing upwards through a transparent chimney.

The upper end of the specimen is ignited and the subsequent burning behaviour of the specimen is observed to compare the period for which burning continues, or the length of the specimen burnt, with specified limits for such burning.

Depending on the type of material the thickness is different. By testing a series of specimens in different oxygen concentrations, the minimum oxygen concentration is estimated.

Test procedure A small test specimen is supported vertically in a mixture of oxygen and nitrogen flowing upwards through a transparent chimney. At least 20 specimens the dimensions 80 – mm x 10 mm, thickness 4 – The materials can be solids, laminates or cellular. The upper end of the specimen is ignited and the subsequent burning behaviour of the specimen is observed to compare the period for which burning continues, or the length of specimen burnt, with specified limits for such burning.

The results obtained are dependent upon the shape, orientation and isolation of the test specimen and the conditions of ignition.

ISO 4589-2 Oxygen Index

Oxygen index results obtained using the methods described in this part of ISO can provide a sensitive measure of the burning characteristics of materials under certain controlled laboratory conditions, and hence may be useful for quality control purposes.

The above dimensions are for moulded or cellular materials. Burning test for Oxygen Index test – Principle.

The materials can be solids, laminates or cellular. The results are defined as oxygen index values. Plastics — Determination of burning behaviour by oxygen index — Part 2: Alternative size for self supporting moulding or sheet materials, for electrical purposes. This part of ISO specifies methods for determining the minimum concentration of oxygen. Results obtained in accordance with this part of ISO must not be used to describe or appraise the fire hazard presented by a particular material or shape under actual fire conditions, unless used as one element of a fire risk assessment that takes into account all of the factors pertinent to the assessment of the fire hazard of a particular application for the material.

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Alternatively, for comparison with a specified minimum oxygen index value, three test specimens are tested using the relevant oxygen concentration, at least two of which are required to extinguish before any relevant burning criterion is exceeded.

Example of products that can be tested according to this method Plastic materials, cable insulation, duct insulation, laminates.

Dimensions in the table are of an original film from which the rolled form is made. The method is refered to in the standard for fire behavour of materials and components in railway applications EN At oso 20 samples with the dimensions 80 — mm x 10 mm, thickness 4 or 10 mm. Verify dimensions with test lab. Areas of use All types of plastics that are self-supporting and in the form of vertical bars or sheet up to Verify with the test lab which thickness applies.

Methods are provided for testing sio that are self-supporting in the form of vertical bars or sheet up to 10,5 mm thick.