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ISO 2507:2026

Thermoplastics pipes and fittings — Vicat softening temperature — General test method and test conditions for vinyl chloride-based (PVC-U, PVC-C, PVC-HI) and acrylonitrile-based (ABS, ASA) pipes and fittings

Jan 26, 2026

General information

60.60     Jan 26, 2026

ISO

ISO/TC 138/SC 5

International Standard

23.040.45     23.040.20  

English   French  

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Published

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Scope

This document specifies a specific method for determining the Vicat softening temperature (VST) of thermoplastics pipes and fittings. It includes the adaption of method B 50 of ISO 306:2022 using a force of 50 N and a heating rate of 50 °C/h and the procedure for specimen preparation.
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.
This document can also be used for pipes and fittings from other materials (e.g. PE-UHMW).

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 2507-1:1995

WITHDRAWN
ISO 2507-2:1995

WITHDRAWN
ISO 2507-3:1995

NOW

PUBLISHED
ISO 2507:2026
60.60 Standard published
Jan 26, 2026

National adoptions

dnaSRPS EN ISO 2507:2024  
ISS

Thermoplastics pipes and fittings - Vicat softening temperature - General test method and test conditions for vinyl chloride-based (PVC-U, PVC-C, PVC-HI) and acrylonitrile-based (ABS, ASA) pipes and fittings (ISO 2507:2026)

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