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  • EN ISO 4491-2:1999

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1997)

    Available format(s): 

    Withdrawn date:  31-01-2000

    Language(s): 

    Published date:  21-07-1999

    Publisher:  Comite Europeen de Normalisation

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

    Foreword
    1 Scope
    2 Normative references
    3 Reagents and materials
    4 Apparatus
    5 Sampling
    6 Procedure
    7 Calculation and expression of test results
    8 Test report
    Annex A (normative) Interpretation of results
    Annex ZA (normative) Normative references to international
                         publications with their relevant
                         European publications

    Abstract - (Show below) - (Hide below)

    Gives a method to determine the relative loss of mass which a metallic powder undergoes when heated in a stream of pure dry hydrogen under specific conditions. The test purpose is to evaluate a chemical powder characteristic which is of importance to the powder metallurgical industry. The test is not meant as a means to determine the content of specific elements. Applies to completely alloyed, partially alloyed and unalloyed powders of the metals listed. Does not apply to lubricated powders or mixtures of metal powders.

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

    Committee CEN/BT
    Development Note Supersedes EN 24491-2 (08/1999)
    Document Type Standard
    Publisher Comite Europeen de Normalisation
    Status Withdrawn
    Supersedes

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

    ISO 4491-1:1989 Metallic powders — Determination of oxygen content by reduction methods — Part 1: General guidelines
    EN 24491-1:1993 Metallic powders - Determination of oxygen content by reduction methods - Part 1: General guidelines (ISO 4491-1:1989)
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