Solutions by
Performance
- ArcelorMittal's best in class product for corrosion resistance is Magnelis® metallic coated steel. It is THE solution to corrosion in the harshest environment, even for deformed parts. The specific composition of Magnelis® (3% Mg and 3.5% Al) is the key element which ensures a stable and durable layer across the entire surface and self-healing characteristics for edges, scratches, and perforations.
- Indaten® for flat products and Arcorox® for sections are weathering steels developed by ArcelorMittal. Weathering steels are well known as corrosion resistant steels thanks to the addition of copper during manufacturing. Corrosion resistance can be improved even further by using phosphorous with the exception of the structural heavy plate to avoid iron phosphide (FeP3).
- Granite® HDXtreme and Granite® Storm organic coated steels have excellent corrosion resistance up to RC5 and are ideal for external usage in severe environments for components such as profiles and sandwich panels for roofing and cladding. They are also suitable for roofing applications such as tiles, guttering, and rainwater systems.
- Sheet piles can be delivered with a specific coating adapted to marine environment and soil conditions.
Related news and technical articles
Alusín Solar chooses XCarb® recycled and renewably produced Magnelis®
13 April 2023Alusín Solar, a company specialising in the design, manufacture, and installation of metal support structures for solar panels, and ArcelorMittal are working together to lower the CO2 footprint of Alusín Solar’s products.
Product newsBuild to last with Granite® organic coated steels
4 April 2023Prepainted steel has been used for more than 50 years in Europe, so ArcelorMittal has had the opportunity to analyse in depth how its products actually behave in situ in different areas. Today, we are in a perfect position to assess the effects of time on our prepainted steel. Our integrated production process (from the hot strip mill through to coil coating) ensures full traceability and a high level of quality.The latest innovation in coating systems not only increases the lifetime of construction products, but also reduces their environmental impact. Granite® has become a guarantee of quality, durability and sustainability. Architects and project designers, developers and contractors, and even insurance companies can be sure of specifying the right product for their projects, with a full guarantee up to 40 years.
Product newsNew SiCA lecture: Corrosion protection of bridges
21 March 2023The newest lecture in our SiCA: Steel in Construction Academy examines the corrosion protection of steel components in bridges for the design engineer.
Website newsBuild durable solar roofs with Granite® organic coated steels
16 November 2022With the demand for electricity growing rapidly, solar energy production via photovoltaic (PV) modules installed on roofs is becoming a solution of choice for developers.Prepainted steel roofing solutions are light, durable, and made from eco-friendly materials. They are also able to sustain the loads required for PV module installation. It's no wonder that installing solar PV systems on steel roofs is increasingly common.However, some precautions should be taken with PV modules, such as ensuring enough space between the module and the organic coated steel surface to enable water drainage and ventilation. With this condition fulfilled, prepainted steels are the preferred material for roofs with PV modules - whatever the type of building.
Product newsGranite® range offers unparalleled sustainability, durability, and aesthetics
11 October 2022ArcelorMittal Europe – Flat Products has an extensive offer of organic coated steels for roofing and cladding applications. Chief amongst them is the Granite® range which includes solutions for all types of buildings and climates – and an unmatched range of colours and finishes. Now Granite® HDX and Granite® HDXtreme are the first organic coated steels to be available with ArcelorMittal’s XCarb® recycled and renewably produced label. The label indicates that the steels are created with recycled content using renewable sources of energy. The environmental savings can reduce the carbon footprint of classic profiles by up to half. And at the end of their life, all Granite® coated steels can be fully recovered and recycled, making them an ideal solution for the circular economy.
Product news
Corrosion resistance
ArcelorMittal Europe has extensive experience and knowledge of developing and offering best in class products and solutions for corrosion resistant steels in the harshest environments.
Corrosion is an electrochemical process where an electrochemical cell is created consisting of an anode, which is depleted to the benefit of a cathode. In practice, cells are formed as soon as a lack of surface uniformity appears creating anode and cathode areas whereby water acts as the electrolyte. In these cells, the steel will corrode each time it becomes the anode, but when it is the cathode, it will remain intact. Corrosion phenomena occur under the action of a corrosive medium and finally lead to erosion of the material.
When it comes to steel, the result may be the visible corrosion product known as rust, which may cause deterioration of the external appearance, and finally, lead to the loss of performance capacity of steel members as well as damage other components.
Magnelis® after 34 weeks of exposure
Table below: Classification of ambient conditions (ISO EN 12994-2)
Useful information
More Magnelis® in agriculture applications
The risk of corrosion depends on the environment in which a material is utilised. The corrosion risks of different ambient conditions have been classified in the ISO EN 12994 standard. The classifications start at C1 (non-aggressive environment) and go up to C5 (most aggressive). Distinctions are made between indoor and outdoor environments.