General Studies · Material Science
During the full annealing process of hypoeutectoid steel, the metal is heated to which temperature range?
- 1Between the lower critical (A1) and upper critical (A3) temperatures
- 2Above the liquidus melting temperature
- 330°C to 50°C above the upper critical temperature (A3) followed by slow cooling in the furnace✓
- 4Below the lower critical temperature (A1)
Correct answer
30°C to 50°C above the upper critical temperature (A3) followed by slow cooling in the furnace
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