Heating the Hypo-eutectoid 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 (B) Hardening (C) Annealing (D) Normalising

Heating the Hypo-eutectoid 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
(B) Hardening
(C) Annealing
(D) Normalising
by

1 Answer

Answer :

Option C
by

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