Engineering Materials
In the lower part of the blast furnace (zone of fusion), the temperature is

400° to 700°C
800°C to 1000°C
1200°C to 1300°C
1500°C to 1700°C

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

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

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