In process annealing, the hypo eutectoid steel is
A
Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air
B
Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium
C
Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace
D
Heated below or closes to the lower critical temperature and then cooled slowly
Correct Answer: Heated below or closes to the lower critical temperature and then cooled slowly
In process annealing, the hypo eutectoid steel isHeated below or closes to the lower critical temperature and then cooled slowly