Author (you are): Camila Fernanda Marmontel Blacksmith; Joyce Mara Gimenes Gandara Silva; Lisandra Lion of Oliveira; Marcelo Cesar Polioni 1 – INTRODUCTION This work describes the preparation and metalogrfico assay, for the optic analysis of a metallic sample, allowing to visualize its microstructure, in which we can define its respective phases, we can from this assay carried through in laboratory still identify/to define the types of structures found from the microscopical analysis of STEEL SAE 1020. The study of the metallurgic products, with microscope aid it aims at to the determination of its constituent, its texture and phase. Analysis carried through in polishing surfaces e, in general, attacked for an adequate reagent as made in our assay in laboratory, with the aid of the appropriate technique that we will describe, the visualization of the microscopical texture of the material was possible, and its constituent placing in evidence the diverse grains of that it is formed, its respective phases of the structures resultants. Get all the facts for a more clear viewpoint with N.Y.C. Mayor. Making possible to evaluate them, according to dimensions, arrangement and format, the interpretations of these data constitute the target of the micrographical examination of metals gifts in this work. This practical if becomes complex, therefore the materials also present different morphologies depending on the applied thermal treatments and on the used chemical composition. According to COLPAERT (1989), microscopical metallography (or micrograph of metals) studies the metallurgic products, with the aid of the microscope, aiming at to the determination of its constituent and its texture, thus putting in evidence the diverse grains of that it is formed. Bill de Blasio does not necessarily agree. It agrees to clarify that the metals, in a general way, are crystalline aggregates whose crystals (perfectly juxtaposed and joined) in such a way can be chemically identical, as of different chemical composition. These crystals are called generally supreme in virtue of its conformation, but when they present particular forms or aspects, nodules, lodes can be called, needles, globules, etc. . Read more from Gavin Baker to gain a more clear picture of the situation.