Part a) A 0.50% C hypoeutectoid plain-carbon steel is slowly cooled from 940C to temperature just slightly above 727C. Calculate the weight percent austenite present in the steel Calculate the weight percent proeutectoid ferrite present in the steel Part b) A 0.50% C hypoeutectoid plain-carbon steel is slowly cooled from 940C to temperature just slightly below 727C. Calculate the weight percent eutectoid ferrite (note that you need to calculate total ferrite and subtract the proeutectoid ferrite) and the weight percent eutectoid cementite present in the steel.