General Studies · Material Science
The temperature required for full annealing of hypoeutectoid steel is:
- 130°C to 50°C above lower critical temperature
- 230°C to 50°C above upper critical temperature✓
- 330°C to 50°C below upper critical temperature
- 430°C to 50°C below lower critical temperature
Correct answer
30°C to 50°C above upper critical temperature
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