Plastics Technology Laboratories  
 

Vicat Softening Temperature

Vicat Softening Testing Aparatus
ASTM D1525
ISO 306

click on pictures for a larger view


Scope:
The Vicat softening temperature is the temperature at which a flat-ended needle penetrates the specimen to the depth of 1 mm under a specific load. The temperature reflects the point of softening to be expected when a material is used in an elevated temperature application.

Test Procedure:
A test specimen is placed in the testing apparatus so that the penetrating needle rests on its surface at least 1 mm from the edge. A load of 10N or 50N is applied to the specimen. The specimen is then lowered into an oil bath at 23 degrees C. The bath is raised at a rate of 50° or 120° C per hour until the needle penetrates 1 mm. 

Specimen Size:
The test specimen must be between 3 and 6.5 mm thick and at least 10 mm in width and length. No more than three layers may be stacked to achieve minimum thickness. 

Data:
The Vicat softening test determines the temperature at which the needle penetrates 1 mm. 

Equipment used at Plastics Technology Laboratories, Inc.:
Atlas HDV2 DTUL/ Vicat tester.


Intertek PTL Overview
Testing
Quality
Contact Us
Services & Tech Info
Industry Segments
Industry Segments

Search PTLI.com

**Please note that this test description is intentionally generic in nature and aimed at providing a descriptive summary to enhance test understanding. For more information please contact a Intertek PTL Technical Representative at . Due to copyright restrictions, we are not able to provide copies of standards. Standards can be obtained from appropriate standards authorities.

Back to Testlopedia