Xiaomi YU7 Body Strength: High vs. Low Steel Safety
Q: Xiaomi YU7 uses 2200MPa Xiaomi super steel. Is higher strength always better for body materials?
A: The strength of body materials is indeed crucial for vehicle safety, but passive safety is a systemic engineering project for the entire vehicle. Materials need targeted selection based on application areas and balanced across multiple properties, such as strength, toughness, elongation, and resistance to brittle fracture. For example, A/B pillars and four-door anti-collision beams are core protective structures for the occupant compartment, requiring high strength to minimize deformation during collisions; thus, Xiaomi YU7 applies industry-leading 2200MPa Xiaomi super steel to the four-door anti-collision beams and A/B pillars’ “embedded roll cage,” offering better protection in side impacts and rollovers. Additionally, the body has crumple absorption zones needing relatively low-strength materials, such as crush cans on anti-collision beams that absorb impact energy through compressive deformation to reduce shock to the occupant compartment. These crush cans use aluminum with induction grooves to facilitate energy absorption. Xiaomi YU7 invests heavily in materials, achieving a 90.2% ratio of high-strength steel and aluminum alloy in its armored steel-aluminum hybrid body. Beyond body materials, Xiaomi YU7 completed 50+ passive safety tests covering all C-NCAP and C-IASI collision standards. We will share more on Xiaomi YU7’s overall safety soon. Stay tuned.