Metallography

Microscopic examination of a metal's crystalline structure, used in conjunction with spectroscopy to determine the composition of a specimen's iron component and the methods by which it was refined (smelted ) into a workable metal. The metal's crystalline structure are examined, using the ferrite , pearlite , and martensite crystal structures and slag content. It can also determine the armount of carbon present in the metal and the method used to achieve heat treating .