On September 17, 2025, in Yangzhou, at the 18th Automotive Lightweight Congress (ALCE 2025), VAMA & GONVVAMA showcased a new generation of aluminized-silicon coated hot-stamping steels and the Yujian™ multi-component integration technology, delivering innovative solutions for the rapidly expanding global hot-stamping steel market.
According to automotive market analysis by ArcelorMittal, the number of global hot stamping production lines is continuing to rise rapidly, with the most remarkable growth seen in China. Against the backdrop of electric vehicles imposing higher requirements for lightweighting, safety, cost control and sustainability, high-performance materials and highly integrated manufacturing processes have become an urgent industry need.
At the exhibition, VAMA highlighted Ductibor® 1500 and Usibor® 2000 as representative innovative products addressing this trend. Zhou Shuai, Customer Technical Support at VAMA, stated: “The new generation of hot-stamping steels not only achieves breakthroughs in balancing strength and toughness, but also opens up a new technical pathway for vehicle lightweighting through material innovation.”
Usibor® 2000 delivers exceptional resistance to delayed cracking while offering a 10% weight reduction compared to the previous generation of 1,500 MPa-grade materials, making it an ideal choice for crash-resistant structural components. Ductibor® 1500, with its outstanding fracture strain and spot-weld strength, is particularly suited for crash energy absorption zones, significantly reducing body weight while ensuring safety.

By applying hot-stamping laser welding technology to combine Usibor® 2000 and Ductibor® 1500 in B-pillars, a weight reduction of over 10% can be further achieved compared to the first-generation combination of Usibor® 1500 and Ductibor® 500, setting a new benchmark for body structure lightweighting.
Building on this, the Yujian™ multi-component integration technology delivers a systematic breakthrough from materials to structural design. It integrates multiple traditional stamped parts into a single modular assembly, enabling the integrated design and manufacturing of key components such as dual door rings, rear body frames and battery pack structures. This not only reduces the number of dies, assembly steps and supply chain complexity, but also comprehensively improves vehicle safety, crash stability and production efficiency.
“The era of electric vehicles demands lighter, safer and more sustainable vehicle bodies,” said Huang Qiang, Product Service Manager at GONVVAMA. “Yujian™ integration represents not only a breakthrough in manufacturing technology, but also an innovation in design philosophy, helping automakers achieve multiple goals of weight reduction, cost reduction and emission reduction.”