With the phs-door ring, voestalpine Automotive Components showcases how advanced production methods, diverse materials, and engineering expertise can come together to create a groundbreaking structural component. This innovation represents a key step toward the next generation of vehicle body architectures and highlights the company’s leadership in modern automotive manufacturing.
The phs-door ring is a large, complex component measuring nearly two meters in length and over one meter in height. It brings together multiple elements—such as the sill, A-pillar, B-pillar, and roof frame—into a single, fully functional module.
The design uses tailor-welded blanks with varying sheet thicknesses and localized reinforcements precisely adapted to different load zones. With the phs-scalefree coating variant now available, voestalpine expands the processing options for press-hardened steels. Customers can choose from a full range of coatings—galvanized, AlSi-coated, and scalefree—allowing maximum flexibility to balance corrosion protection, formability, and thermal resistance depending on specific design and performance requirements.
The phs-door ring provides automakers with clear, measurable advantages by combining intelligent material use with advanced engineering. Its optimized material distribution significantly reduces overall weight, helping manufacturers improve fuel efficiency and vehicle performance without compromising safety. This lightweight design also contributes to sustainability goals by minimizing material usage and lowering the product’s overall CO₂ footprint.
Beyond weight reduction, the component enhances crash safety through the strategic use of materials with varying strengths and ductility. Each section of the door ring is tailored to the specific loads it must withstand, ensuring that energy is absorbed efficiently during a collision. This targeted material application allows manufacturers to achieve superior crash performance while maintaining structural integrity and passenger protection.
Production efficiency is another major advantage. By integrating multiple parts into a single functional unit, the phs-door ring reduces the number of joining steps and simplifies logistics throughout the assembly process. For example, the A-pillar area utilizes 1000 MPa steel with high ductility for improved energy absorption, while a 2000 MPa patch plate in the roof frame enhances rigidity where it’s needed most. Together, these innovations streamline manufacturing while meeting the highest safety and performance standards.
Press-hardened door rings are gaining significant traction globally—especially in China and the United States—and are now entering European series production. The benefits are clear across the automotive industry: large integrated structures like door rings improve crash safety, lower vehicle weight, and streamline manufacturing processes. As a result, they are rapidly becoming standard in next-generation body designs.
The Metal Forming Division serves as voestalpine’s center of excellence for high-precision sections, tubes, and strip steel products, as well as for ready-to-install system components made from pressed, stamped, and roll-formed parts. It stands at the forefront of innovation in lightweight and high-strength automotive solutions.
Within the voestalpine Automotive Components Group, close collaboration across all sites ensures that each location contributes its specialized skills and experience. This integrated approach—from raw material to finished component—enables efficient, high-quality implementation of complex engineering solutions. The phs-door ring exemplifies this capability: it merges safety, efficiency, and intelligent material use into a single structural element, embodying voestalpine’s strength in advanced body construction.
