User:Jasmin Proulx/AlSCAN

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Hydrogen gas porosity is an aluminium casting defect under the form of a porosity or void in an aluminium casting caused by a high level of hydrogen gas in the aluminium at the liquid phase before freezing.

Aluminum smelters and aluminum foundries want to produce high quality aluminum and shape castings. This can be obtained by reducing the amount of hydrogen in the liquid aluminium alloy.