The ability to design and manufacture thermodynamically stable nanocrystalline alloys via electrodeposition has enabled new materials with significantly improved mechanical and corrosion properties. These new alloys are particularly well-suited for applications throughout the electronics transportation aerospace and oil & gas industries. Key to improved corrosion performance is the supersaturated solid solution structure of these single-phase materials eliminating microgalvanic corrosion common to multiphase alloys produced by traditional metallurgical methods. Furthermore the electrodeposition process allows for the fine tuning of alloy composition and subsequent corrosion properties. We have prepared and demonstrated improved corrosion performance among new Ni Zn and Al based nanocrystalline metal alloys. These coatings can provide protection on corrosion prone materials such as Al Cu Fe and Mg.