What is porosity?

Porosity FAQs

Porosity is a phenomenon that occurs in materials, especially castings, as they change state from liquid to solid during the manufacturing process. It has the form of surface and core imperfections which either affects the surface finish or as a leak path for gases and liquids.

Porosity is found in cast components, in components manufactured from powdered metal and in electronic component assemblies.

Download and watch this series of webinars from the North American Diecasting Association (NADCA) to find out more about the causes of porosity and how to reduce the occurrence of porosity in castings.

An Introduction to the Causes of Porosity

Find out more about the causes of casting porosity and the strategies employed to reduce porosity in this webinar from the North American Die Casting Association

Control Porosity with Processing Parameters

Part two of four in this series of webinars from NADCA explores the processing parameters and factors that lead to the formation of porosity in die-casting.

Control Porosity with Casting and Tooling Design

Part three in this webinar series explores the problem of porosity in die-cast components and how to control porosity through casting design and shape

Predicting and Measuring Porosity

This webinar, the final in a series of four from NADCA, explores how to predict and measure porosity in die-cast components

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