Driving sustainable innovation: 4 years of XCarb® in automotive

 

For the past four years, ArcelorMittal's XCarb® initiative has been shaping the future of sustainable steel in the automotive industry. Through pioneering advancements and strategic collaborations, XCarb® recycled and renewably produced steel has played a critical role in reducing the carbon footprint of vehicles while maintaining the highest standards of safety and performance.

Increasing XCarb® production

ArcelorMittal is also investing in economic projects that will continue the growth of the XCarb® offer.

In Sestao, ArcelorMittal is increasing the site’s EAF capacity. Currently, around a quarter of Sestao's output is XCarb® recycled and renewably produced, which is manufactured with a minimum of 75% scrap and using 100% renewable electricity. As customer demand for low -carbon-emissions steel grows, Sestao is ramping up its production of XCarb® recycled and renewably produced, with a target of producing 1.6 million tonnes this year. By the end of 2026, the forecast is for Sestao's product mix to be two-thirds XCarb®.

Taking XCarb® beyond Europe, ArcelorMittal’s North American business, ArcelorMittal Dofasco in Hamilton, is also catering to customer demands for XCarb® recycled and renewably produced steel. And, ArcelorMittal Brasil also offers XCarb® steel certificates to its customers.

“We would like to thank the Automotive Tier Ones and OEMs in the supply chain for having successfully tested and trialled Usibor® 1500 with XCarb® recycled and renewably produced substrate, the automotive reference product for hot stamping.”

 

As we celebrate this milestone, we look back at key automotive innovations made possible by XCarb®, including the latest breakthrough: the hot stamped, laser-welded blank door ring made with Usibor® 1500 and XCarb® recycled and renewably produced substrate.

A reference in hot stamping: Hot stamped, Laser Welded Blank door ring made with Usibor® 1500 and XCarb®, recycled and renewably produced substrate

This innovative door ring sets a new standard for hot stamping, offering a unique combination of weight savings, passenger safety, and a significantly reduced CO₂ footprint. Key features include:

  • Laser ablation technology – removing the AlSi coating without damaging the intermetallic layer or steel substrate.
  • Laser welded blanks technology – ensuring the right steel in the right thickness is used in the right place to optimise crash performance while reducing weight and emissions.
  • Sustainable production – manufactured in an electric arc furnace (EAF) using 100% renewable electricity and at least 75% scrap, leading to a carbon footprint almost 70% lower on a life-cycle basis compared to non-XCarb® alternatives (product carbon footprint data is available upon request).

Collaborations driving sustainable change

XCarb® is at the heart of multiple collaborations with customers aimed at decarbonising the automotive supply chain:

 

Stay tuned for more exciting developments as additional automotive steel grades with XCarb® recycled and renewably produced substrate become available.

ArcelorMittal's climate action: towards net-zero steel

 

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