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SD Updates

Reducing zinc


We are developing a new coating process that uses less zinc, and in 2014 we investigated a number of alternative production technologies for this process. We also launched OptigalTM, a type of steel designed for use in roofing and cladding, which needs less zinc to offer protection because it uses small amounts of aluminium and magnesium instead. An assessment we undertook for its Environmental Product Declaration has shown that OptigalTM halves the amount of zinc required, and reduces the main impacts of zinc production, such as the depletion of fossil and mineral resources.