Bulk characteristics of a powder determine how it will behave during handling, processing and storage. It is influenced by a combination of individual particle characteristics (like size and shape) and environmental factors (such as moisture and aeration). By analysing the powder flowability and apparent density, we can ensure consistent product quality, process efficiency and overall reliability.
Flow behaviour makes or breaks your powder’s performance. Our flowability testing services deliver precise, repeatable measurements to support quality control, material selection and process optimisation. By understanding flow characteristics, you can:
Powder flow characteristics are essential for consistent performance in additive manufacturing, thermal spraying, metal injection moulding and coating processes. Poor flow can cause clogs, dosing issues or defects in final parts.
At Powderloop, we offer standardised flow rate and density testing to help you understand how your powder behaves in real-world applications. This ensures every batch meets production and handling requirements.
We use precision flowmeters to assess the time taken for 50 grams of powder to pass through a funnel under controlled conditions.
This simple yet effective test helps determine whether a powder will handle well in your process or require adjustments.
Apparent density is the mass of a loosely packed powder divided by its volume. We measure this using a calibrated 25cc density cup filled under flowmeter-controlled conditions. This value is crucial for:
We conduct flowability testing in line with internationally recognised ASTM and ISO standards to ensure reliable, repeatable, and comparable results.
ASTM B212: Apparent Density of Free-Flowing Metal Powders Using the Hall Flowmeter Funnel
ASTM B213: Flow Rate of Metal Powders
ISO 4490: Flow Rate by Means of a Calibrated Funnel (Hall Flowmeter)
ISO 3923-1: Apparent Density – Funnel Method (Part 1)
ASTM B417: Apparent Density of Non-Free-Flowing Metal Powders Using the Carney Funnel
ISO 3923-2: Apparent Density – Funnel Method (Part 2)