GB/T 1633-2000: Plastics - Thermoplastic materials - Determination of vicat softening temperature (VST)

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Scope

This standard specifies four test methods for determining the Vicat softening
temperature (VST) of thermoplastics.
A50 method -- Using a force of 10 N, the heating rate is 50 °C/h
B50 method -- Using a force of 50 N, the heating rate is 50 °C/h
A120 method -- Using a force of 10 N, the heating rate is 120 °C/h
B120 method -- Using a force of 50 N, the heating rate is 120 °C/h
The four methods specified in this standard are only applicable to thermoplastics. The
temperature measured is the temperature at which thermoplastics begin to soften rapidly.

Basic Data

Standard ID	GB/T 1633-2000 (GB/T1633-2000)
Description (Translated English)	Plastics. Thermoplastic materials. Determination of vicat softening temperature (VST)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G31
Classification of International Standard	83.080.20
Word Count Estimation	8,822
Date of Issue	2000-07-31
Date of Implementation	2001-03-01
Older Standard (superseded by this standard)	GB 1633-1979
Quoted Standard	GB/T 2918-1998; GB/T 9352-1988; GB/T 11997-1989; GB/T 17037.1-1997; ISO 2818-1994
Adopted Standard	ISO 306-1994; IDT
Issuing agency(ies)	State Quality and Technical Supervision
Summary	This standard specifies: four kinds of Vicat softening temperature thermoplastic determination (VST) Test method. This standard specifies four methods only for thermoplastics, measured is thermoplastic quickly began to soften temperature.