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Hot stamping MPI parts with AP&T


ArcelorMittal and AP&T join forces to create larger and more complex automotive components

To meet the automotive industry’s increasing needs for larger and more complex press-hardened components, AP&T and ArcelorMittal have deepened their collaboration. With ArcelorMittal’s expertise in hot stamping steel and AP&T’s leadership in press-hardening equipment, this partnership is driving the development of advanced solutions, such as ArcelorMittal Multi Part Integration® (MPI), which are shaping the landscape of automotive manufacturing today.


Watch the first episode of Driving steel. In this series we will be exploring the everchanging landscape of automotive manufacturing, highlighting how ArcelorMittal and their partners collaborate and innovate to tackle global automotive challenges. Thanks to the cooperation with ArcelorMittal, AP&T has developed machinery which is capable of efficiently producing large MPI parts with a low footprint. This advanced technology has been successfully installed in various regions worldwide. Discover how such a large press-hardening installation works through the animation in this video:


“In response to the global challenges, the automotive industry is always seeking safer, lighter, and more cost-effective solutions,” says Jesse Paegle, Automotive Steel Solution Director at ArcelorMittal Europe – Flat Products. “But the industry is also looking for more sustainable solutions and ways to simplify vehicle design and production while reducing the size of their production halls.”

ArcelorMittal and AP&T are sharing their expertise to address the need for larger, integrated car parts - available globally. Hot stamping MPI solutions will become more efficient than ever before thanks to this cooperation.

The market leaders in press hardening are deepening their collaboration. Pictured from left to right: Jan Larsson, Business Development Manager at AP&T; Jesse Paegle, Communication and Development Lead Automotive – Steel Solutions at ArcelorMittal Europe – Flat Products; Lennart Johansson, Business Manager of Line Solutions, AP&T; Dr Christian Koroschetz, Head of Products and Marketing, AP&T.

Copyright AP&T

ArcelorMittal assists carmakers in optimising safety and performance using its Global R&D team and extensive experience with advanced automotive steels. The development of press hardenable steels (PHS) such as Usibor® and Ductibor®, and their deployment in laser welded blank technology solutions, underpin this dedication. By conducting hot stamping tests with the AP&T hot stamping press at our Global R&D centre in Montataire (France), ArcelorMittal has developed, finetuned, and tested its solutions.

A notable innovation resulting from these efforts is the improved efficiency and scale of ArcelorMittal Multi Part Integration® (MPI) solutions. This approach enables the integration of multiple vehicle components into one very large – or massive – laser welded blank. This reduces the number of parts and simplifies vehicle design drastically.

However, processing these huge parts results in new challenges for stamping operations. Recognising this, ArcelorMittal collaborates with high-tech stamping partners such as AP&T. These global partners develop and install machinery which is capable of efficiently producing large MPI parts with a low footprint.


“Thanks to this collaboration, ArcelorMittal and AP&T have achieved remarkable results. Together we have pushed the boundaries of automotive manufacturing and paved the way for more efficient and simplified vehicle solutions, enabling the efficient production of huge MPI components.”

Jesse Paegle, Communication and Development Lead Automotive – Steel Solutions at ArcelorMittal Europe – Flat Products


AP&T plays a vital role in this partnership, revolutionising automotive production with its state-of-the-art press-hardening equipment. Seamlessly integrating with ArcelorMittal’s steel innovations, AP&T’s multi-layer furnaces and hot stamping presses represent cutting-edge technology.


“We have certainly taken on the challenges related to the production of large parts. Our press-hardening technology is a perfect match for ArcelorMittal’s MPI body components, since it offers low total cost of ownership, low climate impact, and a very small equipment footprint.”

Dr Christian Koroschetz,
Head of Products & Marketing at AP&T.Dr Christian Koroschetz, Head of Products & Marketing at AP&T


With numerous installations worldwide, AP&T leads the charge in innovation, meeting the demands of carmakers and Tier 1 suppliers across continents. Thanks to the deepened collaboration on press hardening with ArcelorMittal, AP&T is better equipped to meet global demands for the efficient production of safer, lighter cars. The joint efforts of the two partners also benefit carmakers who are looking to reduce the size of their production halls.

The collaboration between ArcelorMittal and AP&T has yielded remarkable results and pushed the boundaries of automotive manufacturing.

The original hot stamped door ring innovation, developed in 2014, has now led to a double door ring. Today, MPI solutions such as the H-frame, dash panel, chassis subframe, and solar roof can replace multiple parts with just one part to streamline production and enhance efficiency.

Copyright ArcelorMittal

AP&T’s press-hardening installations for large integrated components (AP&T® SKY Lines) have already made a significant impact worldwide, they are available globally in all our automotive markets. There are numerous lines in operation , including installations at major electric vehicle producers in North America. The partnership between ArcelorMittal and AP&T represents a transformative shift in the automotive manufacturing industry. With ArcelorMittal’s steel excellence and AP&T’s stamping technology, this partnership is poised to redefine industry standards, making vehicles safer, more efficient, and simpler to produce.


More info on AP&T website


More info about ArcelorMittal Multi Part Integration® (MPI)


More info about hot stamping steels


AP&T’s Multi-Layer Press-Hardening installation supports the development of larger parts and MPI.

Copyright AP&T

AP&T’s press-hardening concept allows body parts – such as double door rings – to be produced from large, integrated blanks, while ensuring that the right steel is used in the right thickness in the right place.

Copyright AP&T

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