Sculptors have taken advantage of weathering steel's corrosion resistance, availability, fabricability, and appearance to create many striking and appealing works of art. The appearance of weathering steel in sculptures can be quite varied, even in the same work. As weathering steel's rust film ages, its appearance usually changes from a matte red-orange color, typical of newly rusted steel, to darker colors ranging from dark brown to blackish purple. The intrinsic behavior of the steel in atmospheric corrosion, the morphology of the rust film, and environmental factors can explain this and other aspects of the appearance of weathering steel.
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