Average grain size

The grain size relating to a minus fraction of 50% is referred to as “medium grain size" (MK). The percentaged weight portion of grains between the grain sizes 4/3 MK and 2/3 MK is referred to as "degree of unifomity" (GG).

Both values have to be indicated to identify the grain size distribution (s. Mold sand testing).

 

 

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