CHEM02200704003 Nilamadhab Pandhy - Homi Bhabha National ...

Chapter 2
arises because minimum nickel content (8 wt %) is required to retain gamma at room temperature.
With both lower and higher chromium content more nickel is required for room temperature
stability of austenite phase. For example with more corrosion resistance 25 wt% Cr-steels, about
15 wt % nickel is required to retain the austenite at room temperature. The family of austenitic and
other stainless steel formed with addition of alloying elements starting from 18 % Cr-8 % Ni is
shown in Fig. 2.4 [15].
Fig. 2.4: Different type of stainless steel with addition of alloying element starting from 18-8
stainless Steel [15].