Flammability ASTM D635, ISO 3795

Flammability ASTM D635, ISO 3795

ASTM D635, ISO 3795 flammability test determines the ignition or combustion properties of substantial thick-walled plastics by calculating their rate of burning. The results obtained are used for quality checks, production benchmarks, and material comparisons during production.

    Scope:

    Flammability ASTM D635 standards assess the ignition or combustion properties of certain materials such as plastics. ASTM D635 flammability test determines the rate of burning of substantial thick-walled plastics. This test is mainly used for quality checks, production benchmarks, and material comparisons. It is not used as a criterion for fire-related risks. This test assesses the ignition or combustion properties of certain materials such as those used in the production of plastic items.

    Test Procedure:

    In the ASTM D635 procedure for the Flammability test, a sample is oriented either vertically or horizontally and placed in the test chamber. Then, the flame is applied using a Bunsen Burner for a measured time. Finally, as the flame propagates, the time or distance at which the flame is put off is measured.

    Specimen size:

    ASTM D635 sample sizes are 125 mm × 13 mm × required thickness ‘t’ to be rated

    ISO 3795 sample sizes are 100 mm × 356 mm (4 inches × 14 inches) x 13mm (0.5 inch)

    Data:

    Time duration before the fire extinguishes

    The distance through the burn propagation

    The linear burning rate (mm per minute)

    Mass of cotton ignited in case fire drops

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