If low carbon steel is expose to carbonizing atmosphere at high temperatures so the surface concentration of carbon is 0.60% by weight and the diffusion coefficient of carbon in the steel is 1.01011m2/s. If the low carbon steel initial has 0.15% by weight of carbon, how long (in minutes) would it take for the concentration at 0.03cm to reach 0.30% If low carbon steel is expose to carbonizing atmosphere at high temperatures so the surface concentration of carbon is 0.60% by weight and the diffusion coefficient of carbon in the steel is 1.01011m2/s. If the low carbon steel initial has 0.15% by weight of carbon, how long (in minutes) would it take for the concentration at 0.03cm to reach 0.30%