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Coatings for flat steels

ArcelorMittal offers a full range of coatings to protect our steels for automotive applications. Many have been developed by ArcelorMittal’s Global R&D teams to meet the unique conditions found in automotive vehicles. For example, our Alusi coating offers exceptional resistance to high temperatures, making it suitable for parts used in or near high-heat components.



Other coatings have been developed to solve a specific need. Ultragal® for example, is designed to minimize the natural waviness of steel. This allows OEMs to create high quality bonnets and body panels, particularly for premium vehicles.

The following table shows ArcelorMittal’s current coatings offer.

Name (symbol)



Alusi® (AS)

High temperature resistance
Available on PHS

Fuel tanks
Exhaust lines

Electrogalvanised (EG)

Corrosion protection

Coated parts (exposed & unexposed)

Extragal® (GI)

Corrosion protection

Coated parts (exposed & unexposed)

Galfan (ZA)

Corrosion protection

Oil pans and filters
Window mechanisms

Galvannealed (GA)

Ease of welding
Corrosion protection

Coated parts (exposed & unexposed)


Corrosion protection
No hydrogen embrittlement

Current and future AHSS and UHSS parts

Ultragal® (GI)

Waviness guarantee

Exposed parts

Zagnelis® Protect

Very high corrosion protection

Unexposed coated parts

Zagnelis® Surface

High corrosion protection compared to galvanization

Coated parts (exposed & unexposed)


As well as our comprehensive selection of coatings, ArcelorMittal can supply our automotive steels with a range of surface treatments. The treatments typically protect the steel from corrosion during handling and processing and can also enhance their processability.




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