en.Wedoany.com Report on Mar 23rd, Recently, China's Shougang, in collaboration with FAW, successfully completed the material development and application verification of 2.4GPa (2400MPa) grade hot-stamping steel. This represents another breakthrough in the global automotive materials sector and is a milestone achievement by the two major enterprises, empowering automotive safety and solidifying the core competitiveness of the industrial chain with top-tier material technology. The successful development of this material signifies that China has entered the global leading ranks in the application field of high-performance automotive steel, providing a revolutionary material solution for automotive safety and lightweighting. 
The 2.4GPa "Steel Skeleton" Combining Strength and Toughness
The 2.4GPa grade hot-stamping steel jointly developed by Shougang and FAW this time achieves a synergistic guarantee of material toughness and hydrogen embrittlement resistance while maintaining ultra-high strength. Compared to the widely used 2.0GPa grade materials in the industry, the new material has achieved significant breakthroughs in the following aspects:
New Heights in Strength
It has been verified that the 2400MPa grade door anti-collision beam shows a 15% increase in strength compared to existing mass-production solutions.
Further Enhancement of Safety Performance
Collision energy absorption is improved by over 10%, providing stronger protection for key safety structures of the passenger compartment; under the same safety standards, it enables a 5%-10% weight reduction for components.
Challenging the Limits, Forging Safety Genes
The birth of the 2.4GPa grade hot-stamping steel is far from a simple composition adjustment or process improvement. Behind it lies a relentless technological challenge throughout the entire metallurgical process, seeking the perfect balance between strength and toughness in the "micron world".
The Ultimate Game in Material Design
Achieving 2.4GPa grade strength places unprecedented demands on the precise ratio of alloying elements during smelting. Shougang achieved precise fine-tuning of elements throughout the process, ensuring every heat of molten steel is "the finest among the finest".
The "Game-Changer" in Continuous Casting
Due to the high alloy content, the continuous casting process once became an insurmountable "chasm" on the path to industrialization. The Shougang team effectively resolved slab quality issues through process optimization, paving the way for the stable mass production of 2.4GPa grade products.
"Zero Tolerance" for Rolling Defects
Through extensive process adjustments, the Shougang technical team successfully overcame one "roadblock" after another during the rolling process of ultra-high-strength grade products, achieving high yield production throughout the entire process from hot rolling to cold rolling.
Breaking Through the Bottleneck of Weld Point Strength
Addressing the weakness bottleneck of welding ultra-high-strength steel, they precisely optimized core welding parameters, effectively improving the load-bearing performance of weld points for 2.4GPa grade hot-stamping steel, making joints stronger and the vehicle body safer.
Standing at the Pinnacle of Steel, Witnessing a New Frontier of Safety
With the rapid development of new energy vehicles and the continuous improvement of collision safety standards, automotive body materials face higher demands. The 2.4GPa grade hot-stamping steel will be first applied to key safety structural components of Hongqi models, effectively resisting impact deformation in extreme collision scenarios and providing solid protection for the "life cabin".
Beyond the leap in safety performance, the application of the new material will also bring significant energy-saving and emission-reduction benefits. Taking a typical body-in-white application as an example, using 2.4GPa hot-stamping steel can further reduce body weight, helping new energy vehicles increase their driving range and reduce carbon emissions throughout their lifecycle.
Advancing Together, Building the Dream of a Strong Automotive Nation
This technological breakthrough is the result of deep integration across the industrial chain. The first application of 2.4GPa hot-stamping ultra-high-strength steel on Hongqi models is another major milestone in joint technological innovation between the two parties and a significant achievement in the field of new material applications. This not only marks a major breakthrough in key core technologies but also demonstrates the powerful synergy of the two major enterprises in full-chain innovation from material R&D to vehicle application. The collaborative innovation system covering the entire industrial chain built by both parties jointly promotes the independent control of core technologies in China's automotive industry, contributing solid strength to the building of a manufacturing powerhouse and an automotive powerhouse.
