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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Results obtained from test specimens of. 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 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 4589–2 limits for such burning.

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.

Burning test for Oxygen Index test – Principle.

Information about EN ISO Oxygen Index

Areas of use All types of plastics that are self-supporting and in the form of vertical bars or sheet up to At least 20 samples with the dimensions 80 — mm x 10 mm, thickness 4 or 10 mm. Verify dimensions with test lab. Alternative size for isso supporting moulding or sheet materials, for electrical purposes.

A method is provided for testing flexible sheet or film materials while supported vertically. Plastics — Determination of burning behaviour by oxygen index — Part 2: Example of products that can be tested according to this method Plastic material, cable insulation, duct insulation, laminate, printed circuit board.

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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 method is refered to in the standard for fire behavour of materials and components in railway applications EN Test procedure A small test specimen is supported vertically in a mixture of ixo and nitrogen flowing upwards through a transparent chimney. The sample dimensions depend on the type of material.

The results are defined as oxygen index values. Example of products that can be tested iwo to this method Plastic materials, cable insulation, duct insulation, laminates.

BS EN ISO 4589-2:2017

The above dimensions are for moulded iwo cellular materials. By testing a series of specimens in different oxygen concentrations, the minimum oxygen concentration is estimated. Reduced test series, one specified oxygen concentration.

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.

The materials can be solids, laminates or cellular. By testing a series of specimens in different oxygen concentrations, the minimum oxygen concentration is estimated.

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 oso 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.

Information about EN ISO 4589-2 Oxygen Index

By testing a series of specimens in different oxygen concentrations, the minimum oxygen concentration is estimated. Methods are provided for testing materials that are self-supporting in the form of vertical bars or sheet up to 10,5 mm thick.

For particular materials or applications, it may be necessary or appropriate to specify different test conditions. Test procedure A small test specimen is supported vertically in a mixture of oxygen and nitrogen flowing upwards through 45892- transparent chimney.

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UL Thermoplastics Testing Center – LOI (EN)

Burning test for Oxygen Index test – Scope. The materials can be solids, laminates or cellular. Verify with the test lab which thickness applies.

When testing according to ISOthe test results will show which oxygen concentration is needed for a specific material to burn continuously.

This part of ISO specifies methods for determining 45889-2 minimum concentration of oxygen. For comparative purposes, a procedure is provided for 4859-2 whether or not the oxygen index of a material lies above some specified minimum value.

For flexible film or sheet. Depending on the type of material the thickness is different. The upper end of kso 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.

Dimensions in the table are of an original film from which the rolled form is made. Areas of use All types of plastics that are self-supporting and in the form of vertical bars or sheet up to The results obtained are dependent upon the shape, orientation and isolation of the test specimen and the conditions of ignition.

At least 20 specimens the dimensions 80 – mm x 10 mm, thickness 4 –

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