What Is Zinc Aluminium

Zinc / Aluminium alloy-coated steel or Zincalume steel is composed of 55% aluminium, 43.5% of zinc and 1.5% of silicone which provides a superior coating for steel. The aluminium in the coating provides barrier protection to the steel whilst the zinc component provides sacrificial cut edge protection. This double protection mechanism is the secret behind Zincalume steel’s superior corrosion performance.

Thanks to a thin transparent layer of aluminium oxides on the top surface of the coating, this appearance is preserved when aging.

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