- Vicat softening point
Vicat softening point or Vicat hardness is the determination of the
softening point for materials such aspolyethylene , which have no definitemelting point . It is taken as the temperature at which the specimen is penetrated to a depth of 1 mm by a flat-ended needle with a 1 sq. mm circular or square cross-section. For the Vicat A test, a load of 9.81 N is used. For the Vicat B test, the load is 49.05 N.Standards to determine Vicat softening point include:
*ASTM D 1525
*ISO 306
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