ISO SN EN ISO 306 pdf download Plastics – Thermoplastic materials – Determination of Vicat softening temperature (VST) (ISO 306:2013) 1 Scope This International Standard specifies four methods for the determination of the Vicat softeningtemperature (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...