A Pd-Ni/Pd-Cu double coating was deposited on stainless steel surface by electroplating. The microstructure and corrosion resistance of the double coating in strong reducing corrosive media were studied. In boiling 90 wt% acetic acid +10 wt% formic acid mixture containing 0.005 mol L-1 NaCl with 900 r min(-1) stir, the corrosion rate of the double coating coated 316L stainless steel is one order of magnitude lower than that of Pd-Cu coated samples. The double coating shows lower porosity, higher hardness and elasticity modulus as well as higher adhesive strength, which may explain the better corrosion resistance in the testing environments. (C) 2014 Published by Elsevier B.V.