HDT - Heat Deflection (or, distortion) Temperature
DTUL - Deflection Temperature Under Load
Vicat Softening Temperature
HEAT DISTORTION
A specimen is placed in a frame. The frame consists of a base, which has two anvils on which the specimen is positioned. A rod is lowered on to the specimen. A mass is applied to the rod in order to apply a specified load (bending stress) to the specimen. The entire frame is submerged in a bath containing a heat transfer medium. The temperature of the heat transfer medium is raised by a specified rate (usually 2°C/minute) until the specimen deflects (bends) a specified amount.Heat distortion Standards : ASTM D648, ISO 75
VICAT SOFTENING TEMPERATURE
The temperature at which a specimen is penetrated a depth of 1.0 mm by a needle of defined area (1mm2) under a concentrated center load condition.Vicat softening Standards : ASTM D1525, ISO 306
Features & Benefits
User Interface
This unit features a color touch-screen LCD display. Operators can configure the options available for the machine and program user settings (language, units, alarms, etc). Individual test protocols can be set and stored for rapid recall when needed. and can be used to control the machine by itself or in conjunction with Tinius Olsen’s Horizon software.