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  • EN 27490 : 1991

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    DENTAL GYPSUM-BONDED CASTING INVESTMENTS FOR GOLD ALLOYS

    Available format(s): 

    Superseded date:  01-12-2000

    Language(s): 

    Published date:  12-01-2013

    Publisher:  Comite Europeen de Normalisation

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

    Foreword
    1 Scope
    2 Normative references
    3 Classification
    4 Requirements
    5 Sampling
    6 Test conditions and preparation of test specimens
    7 Test methods
    8 Information to be supplied by manufacturer
    9 Packaging
    10 Marking
    Annexes
    A - Apparatus for measuring setting expansion
    B - Apparatus for measuring thermal expansion

    Abstract - (Show below) - (Hide below)

    Specifies requirements for, and a classification of, gypsum-bonded casting investments together with test methods to be used to determine compliance with these requirements. Applies to gypsum-bonded investments suitable for casting dental gold alloy which have liquid temperatures not more than 1080 Degrees C. Coverage includes: classification, sampling, packaging and marking. Also includes annexes, tables and diagrams.

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

    Committee TC 55
    Document Type Standard
    Publisher Comite Europeen de Normalisation
    Status Superseded
    Superseded By

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

    ISO 3310-1:2016 Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth
    ISO 1562:2004 Dentistry Casting gold alloys
    ISO 1561:1995 Dental casting wax
    ISO 7500-1:2015 Metallic materials Calibration and verification of static uniaxial testing machines Part 1: Tension/compression testing machines Calibration and verification of the force-measuring system
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