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. 1 Nov Plastics – Determination of burning behaviour by oxygen index – Part 2: Ambient- temperature test (ISO ).

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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 isoo burning.

At least 20 samples with the dimensions 80 — mm x 10 mm, thickness 4 or 10 mm. 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 materials can be solids, laminates or cellular. A method is provided for testing flexible sheet or film materials while supported vertically. Depending on the type of material the thickness is different.

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.

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

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Results obtained from test specimens of.

Information about EN ISO 4589-2 Oxygen Index

Reduced test series, one specified oxygen 458-2. Verify dimensions with test lab. Methods are provided for testing materials that are self-supporting in the form of vertical bars or sheet up to 10,5 mm thick. Test procedure A small test specimen is supported vertically in a mixture of oxygen and nitrogen flowing upwards through a transparent chimney. Burning test for Oxygen Index test – Principle. The results are defined as oxygen index values.

The above dimensions are for moulded or cellular materials. The results obtained are dependent upon the shape, orientation and isolation of the test specimen and the conditions of ignition. This part of ISO specifies methods for determining the minimum jso of oxygen. By testing jso series of specimens in different oxygen concentrations, the minimum oxygen concentration is estimated.

Information about EN ISO Oxygen Index

By testing a series of specimens in different oxygen concentrations, the minimum oxygen concentration is estimated. At least 20 specimens the dimensions 80 – mm x 10 mm, thickness 4 – For particular materials or applications, it may be necessary or appropriate to specify different test conditions.

Example of products that can be tested according to this method Plastic material, cable insulation, duct insulation, laminate, printed circuit board. When testing according to ISOthe test results will show which oxygen concentration is needed for a specific material to burn continuously.

Test procedure A small test specimen is supported vertically in a mixture of oxygen and nitrogen flowing upwards through a transparent chimney. Plastics — Determination of burning behaviour by oxygen index — Part 2: Areas of use All types of plastics that are self-supporting and in the form of vertical bars or sheet up to Areas of use All types of plastics that are self-supporting and in the form of vertical bars or sheet up to 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.

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BS EN ISO 4589-2:2017

The sample dimensions depend on the type of material. Example of products that can be tested according to this method Plastic materials, cable insulation, duct insulation, laminates. For comparative purposes, a procedure is provided for determining whether or not the oxygen index of a material lies above some specified minimum value.

Dimensions in the table are of an original film from which the rolled form is made. Burning test for Oxygen Index test – Scope. Verify with the test lab which thickness applies. Alternative size for self supporting moulding or sheet materials, for electrical purposes.

For flexible film or sheet.

The method is refered to in the standard for fire behavour of materials and components in railway applications EN 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 the specimen burnt, with specified limits for such burning. 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.

By testing a series of specimens in different oxygen concentrations, the minimum oxygen concentration is estimated.