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

Standard Details

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).

General Information

Status : Published

Standard Type: Main

Document No: ISO 2507:2026

Document Year: 2026

Pages: 9

Edition: 3

Section Volume:
ISO/TC 138/SC 5. General properties of pipes, fittings and valves of plastic materials and their accessories -- Test methods and basic specifications