vicatolerance
Vicatolerance refers to the allowable deviation in a Vicat softening temperature measurement for a plastic material. The Vicat softening temperature (VST) is the temperature at which a plastic sample deforms under a specified load while being heated at a controlled rate. Vicat tolerance describes the range around the reported VST within which the true softening temperature is expected to lie, accounting for measurement uncertainty and material variability.
Several factors influence Vicat tolerance. Test conditions such as the load, heating rate, immersion depth, and
Standards and practice. Standards such as ISO 306 and ASTM D1525 define the Vicat test procedure and
Applications. Vicat tolerance is important for quality control, material specification, and comparative material selection. When comparing
See also. Vicat softening point, Vicat test, ISO 306, ASTM D1525.