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Thermoplastics pipes and fittings -- Vicat softening temperature -- Part 1: General test method
The method specified is based on determining the temperature at which a standard indenter, under a force of 50 N ± 1 N, penetrates 1 mm into the surface of a test piece cut from the wall of a pipe or fitting while the temperature is raised at a constant rate.
Is applicable only to thermoplastics materials for which it is possible to measure the temperature at which the rate of softening becomes rapid.
Is based on ISO 306:1994 which, however, applies to materials in the form of sheets.
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