Roof sheet metal GRANITE® HDXTREME

ribbedsteel3D

ArcelorMittal Europe – Flat Products has released Granite® HDXtreme, the latest pre-painted steel in our organic coated Granite® range. Granite® HDXtreme is uniquely beautiful, resilient against corrosion, sustainable, and can be used in both indoor and outdoor applications. The three-layer coating system is made of polyurethane and includes a primer, basecoat, and varnish. Together they enable ArcelorMittal to guarantee the steel’s performance, even on facades and roofs which are close to the sea. Granite® HDXtreme comes in a huge palette of colours and three different finishes to make any project unique. The strength of Granite® HDXtreme comes from its three-layer coating system which ranges from 70 to 75 microns (µm) depending on the finish. Each layer performs a different but integral function. The primer layer plays a key role in corrosion protection by ensuring the top coat adheres tightly to the underlying steel. On top of that is a polyurethane basecoat which ensures the steel’s durability. It also provides the final colour. The coating is finished with a layer of varnish which adds texture to the coating, increases durability and surface robustness, and enhances the UV weathering potential of Granite® HDXtreme. Granite® HDXtreme already meets the requirements of the updated EN 10169 standard for continuously organic coated flat steels. We expect that Granite® HDXtreme will be rated RUV5 when the new standard is published later in 2021. RUV5 indicates the coating has the highest possible resistance to UV light.