What is Metallography? The study of internal structure of a metal or alloy, in relation to its physical and mechanical properties, under a microscope is called metallography.

When the structure of a metal is seen with the naked eye or by low power magnification, then it is said to be macrography and the observed structure is macrostructure. On the other hand, when the structure of the metal is seen at high magnification, then it is said to be micrography and the observed structure is called microstructure.