The binary phase diagram of Fe-Ni, focusing the area of temperature from 400 °C to 1600 °C and Ni mass percentage from 0 % to 50 %. Meanings of the symbols in the diagram are as follows:
α - Ferrite
γ - Austenite
δ - Delta Ferrite
L - Mixed liquid of Fe and Ni
Tc - Curie temperature
The diagram was drawn by the uploader based on the following reference: ステンレス協会（編）. 1995.『ステンレス鋼便覧』第3版. 日刊工業新聞社. ISBN 4-526-03618-8. p. 110.
Own work
Yapparina