Heating the Hypo-eutectoid steels to 30C 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

B. Normalising

C. Hardening

D. Annealing
Be the first to comment if anything wrong with this mcq
Your comment successfully submitted!
It will automatically posted after review and approval by our staff member.