Stainless steel-and-resin composite and method for making same

A stainless steel-and-resin composite, comprising:

• a stainless steel part having a porous film formed on and in direct contact with a surface thereof, wherein the porous film is an anodic oxide film resulting from anodizing the stainless steel part, the porous film having pores with an average diameter of about 100 nm-500 nm, the porous film substantially comprising elements Fe, Cr, Ni, O, Cl and N, the elements Fe, Cr, Ni, O, Cl and N exiting mainly as compounds comprising iron oxide, nickel oxide, chromium chloride, and nickel chloride;
• and
• a resin part integrally bonded to the surface of the stainless steel part having the porous film, with portions of the resin part penetrating in the pores, the resin part mainly comprising crystalline thermoplastic synthetic resin.