The process in which steel is heated 20? to 40?C below the lower critical temperature, held there for a prolonged period and then allowed to cool slowly in the furnace is known as

The process in which steel is heated 20? to 40?C below the lower criti

1.	The process in which steel is heated 20? to 40?C below the lower critical temperature, held there for a prolonged period and then allowed to cool slowly in the furnace is known as
A.	Annealing
B.	Tempering
C.	Normalising
D.	Austempering
E.	Spheroidising
Answer» F.