Nickel-cobalt alloys could be applied in decoration, anti-corrosion and magnetic use due to their good chemical resistance, lubrication, corrosion protection and abrasion resistance properties. This paper aimed to investigate the mechanical and magnetic properties of selective plated nickel-cobalt alloy deposits with different cobalt content. The hardness test results showed that the hardness change was offered to turn back the W configuration with increasing the cobalt content. The deposit with 12¢Mcobalt content had the lowest hardness, and the hardness of37¢Mcobalt content deposit was the highest. By VSM measurement, the results showed that the saturation moment of nickel-cobalt alloy deposits increased with increasing the cobalt content, and their coercivity had the values of 15 to 50 Oe. It could be assumed that the selective plated nickel-cobalt alloy deposits were soft ferromagnetic materials.