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EVS-EN ISO 306:2022

Plastics - Thermoplastic materials - Determination of Vicat softening temperature (VST) (ISO 306:2022)

General information
Valid from 15.12.2022
Base Documents
ISO 306:2022; EN ISO 306:2022
Directives or regulations
None

Standard history

Status
Date
Type
Name
15.12.2022
Main
09.12.2013
Main
This document specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials:
—    Method A50 using a force of 10 N and a heating rate of 50 °C/h;
—    Method B50 using a force of 50 N and a heating rate of 50 °C/h;
—    Method A120 using a force of 10 N and a heating rate of 120 °C/h;
—    Method B120 using a force of 50 N and a heating rate of 120 °C/h.
The methods specified are applicable only to thermoplastics, for which they give a measure of the temperature at which the thermoplastics start to soften rapidly.
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