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Home/Reference Data/Binary Phase Diagrams/Fe-C/A1-eutectoid-temperature

A1-Eutectoid-Temperature — Fe-C

Alloy System
Fe-C
Invariant Point Or Boundary
A1 Eutectoid Temperature
Engineering Significance
Must Heat Above A1 to Austenitize Steel for hardening; Tempering Occurs Below A1
Phase Alpha
Ferrite
Phase Beta
Cementite
Phase Description
Lower Critical temperature; Austenite Decomposes Below This in Steels
Reaction Type
Phase Boundary
Temperature C (C)
727

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Fe-C — invariant point or boundary A1_eutectoid_temperature · engineering significance Must heat above A1 to austenitize steel for hardening; tempering occurs below A1 · phase description Lower critical temperature; austenite decomposes below this in steels · temperature C 727 C | Binary Phase Diagrams | Engineering Database