ArcelorMittal Europe – Flat Products

Online client newsletter | June 2018

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Advanced protection

ArcelorMittal’s new coatings go the extra mile to
safeguard automotive applications

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ArcelorMittal Europe – Flat Products is constantly developing and commercialising advanced steel grades for automotive applications to meet the changing needs of the global mobility industry. In tandem with the development of these new grades, ArcelorMittal also researches and tests new steel coatings which will protect and extend the life of our automotive offer. Two of the newest automotive coatings released by ArcelorMittal are Jetgal® and Zagnelis®.

Commercial production of Jetgal® began at the end of 2016 and the coating has already been approved by some of the world’s major carmakers. A pure-zinc coating, Jetgal® has the same in-use properties as electrogalvanised coating (EZ) products but leads to significant gains in sustainability as the process uses less energy and water.

ArcelorMittal’s JVD line in Liege (Belgium)

The JVD line coats the steel strip in a vacuum to ensure no hydrogen is present

Cecile Pesci, product developer, automotive coatings and surface treatments, ArcelorMittal Global R&D

Zagnelis® maximises corrosion protection and surface aspect

Zagnelis® Surface and Protect offer improved corrosion protection and stamping behaviour compared to EZ coatings. A double-sided coating, Zagnelis® includes zinc, aluminium, and magnesium to ensure maximum protection. The three Zagnelis® coatings available today include:

  • Zagnelis® Protect: For unexposed parts such as the body-in-white. Available for hot and cold rolled substrates.
  • Zagnelis® Surface: Designed for cold rolled substrates used to form exposed and unexposed parts.
  • Zagnelis® Surface Ultra: Offers the same properties as Zagnelis® Surface but this coating can be supplied with a guaranteed waviness (Wa 0.8, ≤ 0.5 µm at 5% elongation) after stamping.

A sample of Zagnelis® Surface Ultra – the reflections indicate the low level of waviness that can be achieved after stamping

Tested in extreme real-life conditions

Zagnelis® has undergone extensive corrosion testing over the past five years at ArcelorMittal’s outdoor testing locations around the world. “We’ve also hung Zagnelis® samples under a truck which travels around 150,000 kilometres annually in Sweden,” says Cecile Pesci. “This test simulates real-world conditions and exposes the coating to temperature extremes, de-icing salts, and the general wear and tear a coating must face in real operating conditions. The Zagnelis® Protect samples have already been in place for four years and we are extremely satisfied with its performance.”

Samples are hung beneath a truck and driven more than 150,000 km annually
as part of ArcelorMittal’s test programme

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