Effect of Bilbao atmosphere on Chillida's sculptures

Weathering steel is a steel specially designed to resist exposure to the open air. Yet in Bilbao some of the sculptures produced in this material, like Eduardo Chillida’s Besarkada XI and Begirari IV, have not been preserved as was anticipated and have sustained some degradation. As explained by a research group, this degradation to due to the fact that the protective layer that is usually developed by this material has not been properly formed.

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