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ISO 306
M00000336
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ISO 306 5th Edition, November 15, 2013 Plastics - Thermoplastic materials - Determination of Vicat softening temperature (VST)
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Description / Abstract:
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