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If you need an equivalent with better protection while keeping 8 µm thickness, specify or a top coat (sealer) .
Zinc acts as a . Even if the coating is scratched and the underlying steel is exposed, the zinc will corrode first to protect the iron. The "b" (bright) designation usually involves a trivalent or hexavalent chromium passivate that delays the formation of "white rust" (zinc corrosion) before the "red rust" (steel corrosion) ever starts. 3. Why Not Thicker?
If you need an equivalent with better protection while keeping 8 µm thickness, specify or a top coat (sealer) .
Zinc acts as a . Even if the coating is scratched and the underlying steel is exposed, the zinc will corrode first to protect the iron. The "b" (bright) designation usually involves a trivalent or hexavalent chromium passivate that delays the formation of "white rust" (zinc corrosion) before the "red rust" (steel corrosion) ever starts. 3. Why Not Thicker? din 50961 fe zn 8b