Global Demand for Weathering Steel Continues to Grow Weathering Steel, also referred to as Cor-Ten steel, is a group of steel alloys that were developed to eliminate the need for painting, and form a stable rust-like appearance if exposed to weather for several years. The chemical composition of these steels includes small amounts of copper, nickel, chromium, and phosphorus. When Corten steel is exposed to the weather, an oxide layer forms on its...
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