PREN ISO 306 : DRAFT 2012

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Test specimens
7 Conditioning
8 Procedure
9 Precision
10 Test report
Annex A (informative) - Comparison of VST
        results obtained with Liquid-filled
        Heating Bath and Direct-contact
        heating unit
Annex B (informative) - Comparison of VST
        results obtained with Liquid-filled
        Heating Bath and Fluidized Bath
Annex C (informative) - Repeatability and
        Precision

Defines four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials: a) Method A50 using a force of 10 N and a heating rate of 50 Degrees C/h; b) Method B50 using a force of 50 N and a heating rate of 50 Degrees C/h; c) Method A120 using a force of 10 N and a heating rate of 120 Degrees C/h; and d) Method B120 using a force of 50 N and a heating rate of 120 Degrees C/h.