The starting temperature of [gamma] [right arrow] [alpha] is lower but the [gamma] [right arrow] [alpha] finishing temperature is higher.
The manganese content increases from 6.43% at [gamma] [right arrow] [alpha] starting temperature (1105.9 K) to 6.86% at [gamma] [right arrow] [alpha] at finishing temperature (956.9 K).
100% martensite is not formed until the steel cools below the martesnite finishing temperature
This dehydrator differs in operation from other simpler units by: (A) The heat selection method gives a low temperature (130[degrees] average) to start the process, a finishing temperature
(135[degrees] average), and a pasteurizing temperature (175[degrees] average) to pasteurize the food when drying is completed.
From this line the starting and finishing temperatures
for the precipitation reactions in AA7921 may be determined.