ASTM B417 Non-Free-Flowing Metal Powders Apparent Density Carney Funnel

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♦ ASTM B417 Non-Free-Flowing Metal Powders Apparent Density Carney Funnel is manufactured according to international standard ASTM B417 Standard Test Method for Apparent Density of Non-Free-Flowing Metal Powders Using the Carney Funnel.

♦ A Carney funnel has orifice of 5 mm and is specially designed for measuring the apparent density of non-free flowing metal powders.

♦ Here we say non-free-flowing is a relative concept, it is relative to the hall flowmeter funnel, cause if a metallic powder can flow freely through an orifice of 2.5 funnle (Hall Flowmeter Funnel) we need’t use a Carney funnel.

♦ But a powder that can not pass through a Carney funnel we also call it non-free-flowing powder relative to a Scott Volumeter which is not restricted by the orifice since a scott volumeter has completely different structure. These three apparatus are most widely used Bulk Density Testers.

♦ In above picutre, the left is a hall flowmeter funnel and right is a Carney funnel manufactured by AimSizer.

(Last Update: June 3, 2015)