Automobile Side Structure Concept of Automobile Body Utilizing Ultra High-Tensile Strength Roll Formed Parts Effect Points Both improved side impact performance and weight reduction are realized. (Weight reduct ion ▲25%) Aim of Adopting Ultra High-Tension Roll Form Technology in Vehicle Body Part Aim of Adopting Ultra High-Tension Roll Form Technology in Vehicle Body Part New Body Structure Utilizing Ultra High-Tensile Strength Roll Form Member New Body Structure Utilizing Ultra High-Tensile Strength Roll Form Member Strength Strength Design Design B Pillar R/F B Pillar R/F Roof Cross Member Roof Cross Member Locker R/F Locker R/F Result of IIHS Side Impact CAE Result of IIHS Side Impact CAE Body Center Body Center Seat Center Seat Center Strengthening Structure of Press Parts Strengthening Structure of Press Parts Structure Utilization Roll Form Structure Utilization Roll Form Floor Cross Member Floor Cross Member Roll Form Parts Roll Form Parts Aspect Ratio of Parts Aspect Ratio of Parts Spring back control is easy. Spring back control is easy. Crash worthiness is high. Crash worthiness is high. 590 MPa-grade t 2.3 590 MPa-grade t 2.3 Examples of B Pillar R/F Structure by Ultra High-Tensile Strength Roll Form Examples of B Pillar R/F Structure by Ultra High-Tensile Strength Roll Form 590 MPa-grade-t 2.9 590 MPa-grade-t 2.9 1270 MPa-grade-t 2.0 Roll Form 1270 MPa-grade-t 2.0 Roll Form Closing cross section is possible (variable cross section is possible for some part s). Closing cross section is possible (variable cross section is possible for some part s). Press Forming Press Forming Roll Forming Technology with Ultra Tensile Strength Steel Sheet Roll Forming Technology with Ultra Tensile Strength Steel Sheet Characteristics of Ultra High-Tensile Strength Roll Form Characteristics of Ultra High-Tensile Strength Roll Form Low Low High High Parts Function Weight Reduction Effect ▲14.4kg/car * Awarded by the Society of Automotive Engineers (SAE) and the American Iron and Steel Institute (AISI). Awarded the Sydney Melbourne Prize in 2006.