SNV ISO 306 : 1994
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
PLASTICS - THERMOPLASTIC MATERIALS - DETERMINATION OF VICAT SOFTENING TEMPERATURE (VST)
23-07-2013
12-01-2013
Specifies four methods for the determination: method A50 using a force of 10 N and a heating rate of 50 degree C/h, method B50 using a force of 50 N and a heating rate of 50 degree C/h, method A120 using a force of 10 N and a heating rate of 120 degree C/h, method B120 using a force of 50 N and a heating rate of 120 degree C/h. The principle is determining the temperature at which a standard indenter penetrates 1 mm into the surface. The methods are applicable only to thermoplastics, for which they give a measure of the temperature at which the thermoplastics start to soften rapidly.
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