Cor-Ten steel is mainly an iron-carbon alloy which includes copper also chromium, nickel, phosphorus, silicon and manganese comprising all of them less than 5% of the total metallurgic composition. The characteristics are specified in the European standard EN 10025-5 and in the American standard ASTM G101:4. When utilising Cor-Ten, it is required to account for the expected loss of thickness due to corrosion, and as far as necessary, compensate for it by increasing the thickness of the material depending on the durability requirements. In this sense, the annual steel loss due to corrosion for a C4 environment (industrial and coastal areas) is estimated as a linear function and accounts for 0.02 mm/year during the first two (2) years.
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