Abstract: The present application discloses (i) a coating composition comprising a particulate zinc-based alloyed material, said material comprising 0.05-0.7% by weight of bismuth (Bi), the D50 of the particulate material being in the range of 2.5-30 ?m; (ii) a coated structure comprising a metal structure having a first coating of the zinc-containing coating composition applied onto at least a part of the metal structure in a dry film thickness of 5-100 ?m; and an outer coating applied onto said zinc-containing coating in a dry film thickness of 30-200 ?m; (iii) a particulate zinc-based alloyed material, wherein the material comprises 0.05-0.7% (w/w) of bismuth (Bi), and wherein the D50 of the particulate material is in the range of 2.