Newly Developed Zn-Fe/Zn-Ni Double-Layer Electroplated Steel Sheet 830518
A new double-layer electroplated steel sheet has been developed. The steel sheet is composed of an upper Zn-Fe (80-90%) alloy layer which has good paint adhesion and a lower Zn-Ni (10-15%) alloy layer which has good corrosion resistance. Paintability, corrosion resistance and workability of the steel sheet were investigated. This coated steel sheet was revealed to be suitable for the automobile use.