1.1 This document specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials:
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— Method A50 using a force of 10 N and a heating rate of 50 °C/h;
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— Method B50 using a force of 50 N and a heating rate of 50 °C/h;
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— Method A120 using a force of 10 N and a heating rate of 120 °C/h;
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— Method B120 using a force of 50 N and a heating rate of 120 °C/h.