Question

A slowly cooled plain carbon steel has proeutectoid cementite to be 10% by weight of micro structure. what id the carbon content of the steel? ​

Answer 1

For plain carbon steels, i.e. Fe-C-based alloys containing about 0.5% Mn and 0.25% Si,1 the eutectoid composition corresponds to a carbon composition of about 0.8%, and the eutectoid temperature is approximately 725°C (Bain and Paxton, 1966).