Question: Heating the hypoeutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called
[A].tempering
hardening
annealing
normalising
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.