Image:Steel pd.svg

From Wikipedia, the free encyclopedia

Image
File history
File links

Steel_pd.svg‎ (SVG file, nominally 420 × 380 pixels, file size: 336 KB)

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 : User:User A1 Original Author : Christophe Dang Ngoc Chan

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	11:13, 6 December 2007	420×380 (336 KB)	User A1 (Talk \| contribs)	(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)