ASTM B212-21

ASTM B212-21

Standard Test Method for Apparent Density of Free-Flowing Metal Powders Using the Hall Flowmeter Funnel

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Détails

1.1 This test method describes a procedure for determining the apparent density of free-flowing metal powders, and mixed powders, and is suitable for only those powders that will flow unaided through the specified Hall Flowmeter funnel.

1.2 Units—With the exception of the values for mass, volume, and density, for which the use of the gram and the cubic centimetre units is the long-standing industry practice, the values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


Significance and Use:

5.1 This test method provides a guide for evaluation of an important physical characteristic of a powder known as the apparent density. The measured apparent density bears a relationship to the mass of powder that will fill a fixed volume die cavity. The degree of correlation between the results of this test and the performance of powders during use may vary with each particular application. Note, however, that the presence of moisture, oils, stearic acid, stearates, waxes, and the temperature of the powder mass may alter the physical characteristics of the powder.

Informations supplémentaires

Auteur American Society for Testing and Materials (ASTM International)
Comité B09.02 - Committee B09 on Metal Powders and Metal Powder Products
Edité par ASTM
Type de document Norme
Thème ,Powder metallurgy
ICS 77.160 : Métallurgie des poudres
Nombre de pages 4
Remplace ASTM B212-17
Recueil ASTM Volume 02.05 - Multi-User - Single-Site Online
Historique ,,,,,
Mot-clé B212

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