BS EN ISO 306:2013

This standard BS EN ISO 306:2013 Plastics. Thermoplastic materials. Determination of Vicat softening temperature (VST) is classified in these ICS categories:

• 83.080.20 Thermoplastic materials

This International Standard 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.