Metallographic examination relates to the methods of studying structure of metals and alloys. Macro examination is a method of examination of large regions of the specimen surface or fractured section, allowing to determine character of the structure, defects and segregation of alloying elements with the naked eye or under low magnification. Optical micro examination is a method of studying of microstructure constituents by means of the metallurgical microscope. Scanning electron microscope examination is a method of studying of microstructure constituents by means of the scanning electron microscope.