Innovation is at the heart of ArcelorMittal. Over the years, the steel manufacturer has excelled in the development of metallic coatings that offer a wide range of manufacturing options with outstanding economic, technological and environmental advantages. Its latest innovation – a breakthrough in corrosion-resistant metallic coatings – is no exception.
ArcelorMittal’s Magnelis® metallic coating ensures optimal surface protection against long-term wear and tear. After having undergone a series of comparative tests, this revolutionary new coating has proven to perform significantly better than alternative European products.
Magnelis® is produced on a classic industrial hot dip galvanising line, but is dipped in a molten bath comprising a distinctive metallic chemical composition of zinc with 3.5% aluminium and 3% magnesium. The 3% magnesium is crucial as it creates a stable and robust layer across the entire metal surface, providing a far more effective defence against corrosion than coatings with a lower magnesium content. Magnelis® performs up to ten times better than galvanised steel.
Magnelis® is the optimal coating to protect against atmospheric corrosion, it:
To demonstrate this efficacy, over an eight-month period ArcelorMittal submitted a range of metallic coated products to salt spray tests. The results clearly highlighted the superior corrosion resistance performance of Magnelis®. In stark contrast to the other samples, no red rust could be observed on the Magnelis® sample.
How is the aspect of Magnelis®?
The aspect of Magnelis® is very similar to the aspect of standard galvanised material.
Can Magnelis® be easily processed?
The adherence of the Magnelis® coating is very good. Magnelis can be roll formed or deep drawn without any problem. The lower friction coefficient of Magnelis® is leading to a better roll forming ability, and the decreased powdering is leading to a better deep drawability. Magnelis® can also be welded or cut with different techniques.
Can Magnelis® be painted?
Yes indeed, Magnelis® can be post painted. Good results can be achieved even so far as to eliminate phosphatation. Nevertheless it is recommended to make a trial in order to evaluate the adhesion
How is the corrosion resistance of Magnelis® in contact with soil?
Magnelis® shows very good corrosion properties in direct contact with soil. The corrosion rate depends of course on the type of soil. For example, tests done on soil with a PH of 6, very common, demonstrated that Magnelis® offers protection against corrosion which is superior to post galavanised steel.
Is the self healing effect also working for high thickness?
Yes it is. When using the optimal coating, the self healing effect is active up to the maximum thickness we are offering, so up to 6 mm.
Can Magnelis® also be used for tubes?
Magnelis® is an excellent material for tubes. The weld is often the weak point of a galvanised tube but with a tube in Magnelis®, the welded zone is protected by the self healing effect. Therefore, a Magnelis® tube shows a substantially improved corrosion performance compared to a standard galvanised tube.