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.
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2007-12-06 11:13 User A1 420×380× (344464 bytes) 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, austeniti
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{{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|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: * �