Engineering Materials
The temperature required for full annealing in hypereutectoid steel is

30° C to 50° C above upper critical temperature
30° C to 50° C below lower critical temperature
30° C to 50° C above lower critical temperature
30° C to 50° C below upper critical temperature

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Engineering Materials
Free carbon in iron makes the metal

Soft and gives a coarse grained crystalline structure
Soft and gives a fine grained crystalline structure
Hard and gives a coarse grained crystalline structure
Hard and gives a fine grained crystalline structure

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