Gustavsson Flowmeter Test Setup – Applications:

The Gustavsson funnel method is used to determine the flowability and apparent density of fine powders, particularly metal and ceramic powders used in additive manufacturing, powder metallurgy, and other precise industrial processes. The method uses a calibrated Gustavsson funnel with a nozzle opening of 2.5 mm through which the powder flows exclusively by gravity. The flow time and the mass of the flowed-through powder are measured to quantitatively evaluate the flow behavior.

Experts appreciate this method because it provides a reproducible and easy-to-perform measurement that strongly correlates with particle shape, surface texture, moisture content, and internal friction. Powders with irregular morphology, high specific surface area, or poor lubrication typically exhibit longer flow times or refuse to flow entirely. The Gustavsson funnel is very sensitive to small differences in powder processing, making it ideal for quality control and batch comparison.

In addition to the flow time, the apparent density is frequently determined using a standardized density cup. The combination of these parameters enables a reliable prediction of powder behavior in real processes such as die filling, powder bed application, or compaction. Since the method is standardized (e.g., ISO 13517), the results are comparable between laboratories and suppliers, supporting consistent material qualification and process optimization.