<p>ISO 306:2004 specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials: </p>
<ol><li>Method A50 using a force of 10 N and a heating rate of 50 °C/h</li><li>Method B50 using a force of 50 N and a heating rate of 50 °C/h</li><li>Method A120 using a force of 10 N and a heating rate of 120 °C/h</li><li>Method B120 using a force of 50 N and a heating rate of 120 °C/h.</li></ol>
<p>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.</p>
Registration number (WIID)
33317
Scope
<p>ISO 306:2004 specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials: </p>
<ol><li>Method A50 using a force of 10 N and a heating rate of 50 °C/h</li><li>Method B50 using a force of 50 N and a heating rate of 50 °C/h</li><li>Method A120 using a force of 10 N and a heating rate of 120 °C/h</li><li>Method B120 using a force of 50 N and a heating rate of 120 °C/h.</li></ol>
<p>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.</p>
