Abstract

This document specifies a general method for determining the Vicat softening temperature (VST) of thermoplastics pipes and fittings. It includes the adaption of ISO 306:2022, Method B 50, using a force of 50 N and a heating rate of 50 °C/h. It includes the particular test conditions for determining the Vicat softening temperature (VST) of unplasticized poly(vinylchloride) (PVC-U) or chlorinated poly(vinylchloride) (PVC-C) pipes and fittings, for high impact resistance poly(vinylchloride) (PVC-HI) pipes and for acrylonitrile/butadiene/styrene (ABS) and acrylonitrile/styrene/acrylic ester (ASA) pipes and fittings. It also gives, for information, the corresponding base specifications. This document is not applicable to crystalline or semi-crystalline polymers.

Begin

2024-02-27

WI

00155A1G

Planned document number

DIN EN ISO 2507

Project number

05402339

Responsible national committee

NA 054-05-02 AA - Test methods for plastic pipes  

Responsible european committee

CEN/TC 155 - Plastics piping systems and ducting systems  

Responsible international committee

ISO/TC 138/SC 5/WG 5 - Polyolefin pipes  

draft standard

Thermoplastics pipes and fittings - Vicat softening temperature: General test method and test conditions for Vinyl chloride - based (PVC-U, PVC-C, PVC-Hi) and Acryl nitrile - based (ABS, ASA) pipes and fittings (ISO/DIS 2507:2025); German and English version prEN ISO 2507:2025
2025-03
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previous edition(s)

Thermoplastics pipes and fittings - Vicat softening temperature - Part 3: Test conditions for acrylonitrile/butadiene/styrene (ABS) and acrylonitrile/styrene/acrylic ester (ASA) pipes and fittings (ISO 2507-3:1995); German version EN ISO 2507-3:2017
2018-01

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Thermoplastics pipes and fittings - Vicat softening temperature - Part 2: Test conditions for unplasticized poly(vinyl chloride) (PVC-U) or chlorinated poly(vinyl chloride) (PVC-C) pipes and fittings and for high impact resistance poly(vinyl chloride) (PVC-HI) pipes (ISO 2507-2:1995); German version EN ISO 2507-2:2017
2018-01

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Thermoplastics pipes and fittings - Vicat softening temperature - Part 1: General test method (ISO 2507-1:1995); German version EN ISO 2507-1:2017
2018-01

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