ISO 4490:2014 Metallic powders - Determination of flow rate by means of a calibrated funnel (Hall flowmeter)
standard by International Organization for Standardization, 08/15/2014
ISO 4490:2014 specifies a method for determining the flow rate of metallic powders, including powders for hard metals, by means of a calibrated funnel (Hall flowmeter). The method is applicable only to powders which flow freely through the specified test orifice.