Cooling of hypoeutectoid steels in done is furnace by decreasing the temperature

Question - Cooling of hypoeutectoid steels in done is furnace by decreasing the temperature to at least ________ below the A1 line.

Options:

A . 4°C

B . 10°C

C . 16°C

D . 30°C

Answer: Option D
Answer: (d).30°C

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