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1. |
The temperature required for full annealing in hypereutectoid steel is |
A. | 30° C to 50° C above upper critical temperature |
B. | 30° C to 50° C below upper critical temperature |
C. | 30° C to 50° C above lower critical temperature |
D. | 30° C to 50° C below lower critical temperature |
Answer» D. 30° C to 50° C below lower critical temperature | |