This standard was last reviewed and confirmed in 2019. Therefore this version remains current.
ISO 306:2013 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 K/h;
- method B50 using a force of 50 N and a heating rate of 50 K/h;
- method A120 using a force of 10 N and a heating rate of 120 K/h;
- method B120 using a force of 50 N and a heating rate of 120 K/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.
Status : PublishedPublication date : 2013-11
Edition : 5Number of pages : 16
Technical Committee:Mechanical behavior
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