A COATING COMPOSITION FOR STEEL PRODUCT, A COATED STEEL PRODUCT, AND A STEEL PRODUCT COATING METHOD

摘要

A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compoun d constituent in effective amounts to decrease the spangle facet size of the coated produc t, improve tension bend rust stain performance, improve coated surface appearance when brushed, and coated product paintability. Constituents include borides such as titanium boride a nd aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.