Heat Distortion Tester

?Heat Distortion Tester is a tester to test the test specimen under a specific heating rate and to a specific load to measure the temperature of which deformation or the VICAT softening point occurs. Start the test by putting a specific amount of load to the specimen and heat it with a specific heating rate. Repeatedly measure the temperature at which certain deformation occurs (HDT Test) or the temperature at which the loading rod penetrates into the specimen for a certain amount of depth.
JIS K7191 (2007)  ISO75 (2013)
JIS K7206 (1999) ISO 306 (2004)
ASTM D648-07
ASTM D1525-09