British Standards Institution

Source:: ISO
Committee:: PRI/88 - Plastics piping systems
Categories:: Pipelines. Plastics | Fittings. Plastics
Comment period start date:: 25/02/2025
Comment period end date:: 20/04/2025
Number of comments:: 0

Comment by:

20th Apr

Scope

ISO 2507 specifies a general 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.

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.

It is not applicable to crystalline or semi-crystalline polymers.

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

12/06/2024

3. Public Comments

Public Comments start date:

25/02/2025

Public Comments end date:

20/04/2025

Learn more about the standards development process

Standards Development

BS EN ISO 2507 ISO 2507 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

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