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The Nordic Brown product consists of 100% Cu-DHP according to /EN 1172/, i.e. oxygen-free phosphorus de-oxidised copper with limited residual phosphorus. Nordic Brown is pre-oxidised at Aurubis’ factory to give straightaway the same oxidised brown surface that otherwise develops over time in the environment. The thickness of the oxide layer determines the colour: both Nordic Brown Light and the darker Nordic Brown versions are available. Nordic Brown is darker than Brown Light in the beginning due the thicker oxide layer. Colour of the Brown Light is light or medium brown and will change darker by time. Nordic Brown is available in sheets or coils.  Thickness range: 0.5 – 1.5 mm  Maximum width: 1000 mm. The oxide layer of the strips and sheets consists of Cu2O and CuO oxides. This declaration is valid for the product Nordic Brown and Nordic Brown Light.