The clad slab of 0.017%C 316L/0.076%C 310S steel and 0.16%C Q345 steel heated at 1200℃ for 2h

rolled at 1150℃ and finishing rolled at 1000℃ by 5 rolling passes with per pass reduction 20%~25% to tested clad plate. The pseudo-equilibrium phase diagrams of stainless steels in clad plate are calculated by soft-ware Thermo-Calc to get the critical carbon content for precipitated carbide at rolling temperature of steel 316L and 310S are respectively 0.082% and 0.076%

and the analysis and calculation of concentration distribution of carbon in hot-rolled stainless steel-low carbon steel clad plate are carried out by using Fick second diffusion law

based on the results the distance of carbon diffusion in steel 316L and 310S is respectively 10μm and 12μm that basically corresponds with oxalic acid etching result (distance of carbon diffusion in steel 316L being 7μm). The corrosion resistant of clad plate with 316L steel cladding is better than that with 310S steel cladding.