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  • BS EN ISO 306:2013

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Plastics. Thermoplastic materials. Determination of Vicat softening temperature (VST)

    Available format(s):  Hardcopy, PDF

    Superseded date:  10-02-2023

    Language(s):  English

    Published date:  30-11-2013

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principle
    5 Apparatus
    6 Test frame assembly calibration
    7 Test specimens
    8 Conditioning
    9 Procedure
    10 Precision
    11 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 bed
    Annex C (informative) - Repeatability and precision
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials: - method A50 using a force of 10 N and a heating rate of 50 K/h; - method B50 using a force of 50 N and a heating rate of 50 K/h; - method A120 using a force of 10 N and a heating rate of 120 K/h; - method B120 using a force of 50 N and a heating rate of 120 K/h.

    Scope - (Show below) - (Hide below)

    This International Standard specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials:

    • method A50 using a force of 10N and a heating rate of 50K/h;

    • method B50 using a force of 50N and a heating rate of 50K/h;

    • method A120 using a force of 10N and a heating rate of 120K/h;

    • method B120 using a force of 50N and a heating rate of 120K/h.

    The methods specified are applicable only to thermoplastics, for which they give a measure of the temperature at which the thermoplastics start to soften rapidly.

    General Product Information - (Show below) - (Hide below)

    Committee PRI/21
    Development Note Supersedes BS 2782-1.120A,B,D,E(1990), 93/302776 DC and 02/121615 DC. (10/2004) Supersedes 12/30237820 DC. (11/2013)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS DD9999(2005) : 2005 CODE OF PRACTICE FOR FIRE SAFETY IN THE DESIGN, CONSTRUCTION AND USE OF BUILDINGS
    BS 9999:2008 Code of practice for fire safety in the design, management and use of buildings
    BS 7722:2002 Surface covered PVC-U profiles for windows and doors. Specification
    DEFSTAN 02-530/2(2004) : 2004 REQUIREMENTS FOR MAIN AND DISTRIBUTION SWITCHGEAR - CATEGORY 2
    BS 5391-1:2006 Acrylonitrile-butadiene-styrene (ABS) pressure pipe Specification
    BS 5392-1:2006 Acrylonitrile-butadiene-styrene (ABS) fittings for use with ABS pressure pipe Specification
    BS 7413:2002 Unplasticized polyvinyl chloride (PVC-U) profiles for windows and doors. Specification
    BS PAS 25(1999) : 1999 PLASTICS FRAMES FOR USE IN GULLY TOPS AND MANHOLE TOPS FOR PEDESTRIAN AREAS
    16/30314117 DC : 0 BS 9999 - FIRE SAFETY IN THE DESIGN, MANAGEMENT AND USE OF BUILDINGS - CODE OF PRACTICE
    BS 9999:2017 Fire safety in the design, management and use of buildings. Code of practice
    BS 7288:2016 Specification for residual current devices with or without overcurrent protection for socket-outlets for household and similar uses

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 293:2004 Plastics — Compression moulding of test specimens of thermoplastic materials
    ISO 294-3:2002 Plastics Injection moulding of test specimens of thermoplastic materials Part 3: Small plates
    ISO 472:2013 Plastics Vocabulary
    ISO 294-2:1996 Plastics Injection moulding of test specimens of thermoplastic materials Part 2: Small tensile bars
    ISO 291:2008 Plastics Standard atmospheres for conditioning and testing
    ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
    ISO 294-1:2017 Plastics — Injection moulding of test specimens of thermoplastic materials — Part 1: General principles, and moulding of multipurpose and bar test specimens
    ISO 2818:1994 Plastics — Preparation of test specimens by machining
    ISO 20753:2008 Plastics Test specimens
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