Question: a 1020 steel bearing an fec alloy where c02wt is...
A 1020 steel bearing (an Fe-C alloy where [C]=0.2wt%) is carburized at 927oC.
After 4 hours of carburization, what is the carbon content 0.9 mm below the surface
if the surface concentration is found to be 1.0wt%? Assume D for C in 1020 at this
temperature is equal to 1.28x10-11 m2/s