The lower critical temperature Options: A . &nbspDecreases as the carbon content in steel increases B . &nbspIncreases as the carbon content in steel increases C . &nbspIs same for all steels D . &nbspDepends upon the rate of heating

The lower critical temperature

Question

The lower critical temperature

Options:

A . Decreases as the carbon content in steel increases

B . Increases as the carbon content in steel increases

C . Is same for all steels

D . Depends upon the rate of heating

Answer: Option C
The lower critical temperature is same for all steels.
Lower critical temperature for steel’s austenite-to-pearlite transformation is 1333°Fahrenheit (723°Celsius). Below this temperature, austentite doesn’t exist.

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