ISO 306:2013

Plastics — Thermoplastic materials — Determination of Vicat softening temperature (VST)

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.

Edition	2013
Published Date	2013
Published By	International Standardization Organisation
Page Count	16