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What does GFN stand for?

GFN stands for Grain Fineness Number (American Foundry Society)

This definition appears very rarely and is found in the following Acronym Finder categories:

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We have 22 other meanings of GFN in our Acronym Attic

Samples in periodicals archive:

The optimal grain fineness number (GFN) in a sand system is determined by the type of metal poured, pouring temperatures, casting product mix (heavy vs.
The grain fineness number (GFN) and particle size distribution of the sand and additives also affect benchlife characteristics of mixed sand.
Follow-up DOE A follow-up DOE was designed to study the influence of more specific process variables, These included sand grain fineness number (GFN) and screen distribution for a specific sand type, sand temperature at time of mixing, mix benchilfe over a wider range and further variations in the boiling point of the binder solvent package.