Image: Steel pd

Description: Steel phase diagram Iron-carbon phase diagram under atmospheric pressure This diagram is limited by pure iron on the left and by iron carbide on the right. The mains phases are: * α iron: ferrite, ferritic steel * γ iron: austenite, austenitic steel * iron carbide: cementite, Fe3C. We can see a eutectic and a eutectoid; these phases crystallise as a stacking of fine strips of pure phases (iron and cementite) in case of the eutectoid, or a pure iron containing small balls of cementite for the eutectic. Although it is heterogeneous, these phases behave like homogeneous pure bodies. Steel is between 0 and 2.06 mass percent of carbon. Cast iron is between 2.06 and 6.67%. Note that this diagram is for illustrative purposes only, and is not thermodynamically accurate. SVG Author : en:User:User A1 Original Author : Christophe Dang Ngoc Chan
Title: Steel pd
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