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Term Definition
Dimension expressed in terms of a system of arbitrary reference numbers. Dimensions expressed in decimals are preferred.
Grain Flow
The directional characteristics of the metal structure after working, revealed by etching a polished section.
Grain Size
A measure of crystal size. Grain size is usually expressed as a number, with 1-5 being considered "coarse" and 5-8 being termed "fine". The higher the number, the finer the grain.
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