Engineering Materials
Manganese is added in low carbon steel to

All of these
Make the steel ductile and of good bending qualities
Raise the yield point
Make the steel tougher and harder

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

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

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