ahss high-ductility dual-phase and complex-phase steels are the benchmark in ultra-high-strength steels for crash-relevant components. With their unique bending properties and outstanding deep-drawing characteristics, ahss high-ductility steels provide a time-tested alternative to press-hardening steels. The original steels of specific components were compared in the SLIMulations with possible ahss high-ductility steels and crash tests simulated. The comparison is based on a 5-star-safety mid-size car (source: NCAP).
Component (Selection) | Originally used steel | Weight savings in % | voestalpine grade |
Front side member closure panel | CR440Y780T-DP | - 25 % | CR850Y1180T-DH |
| Seat crossmember | CR330Y590T-DP | - 20 % | CR700Y980T-DH |
| Sill outer part | CR440Y780T-DP | - 20 % | CR780Y980T-CH |
| Rear crash box | CR300LA | - 25 % | CR780Y980T-CH |
| Rear bumper | CR440Y780T-DP | - 20 % | CR850Y1180T-DH |
Test simulations
Front crash rigid wall – 56 km/h
Side pole crash test – 32 km/h
Rear crash test with moving barrier – 48 km/h
Rear insurance test with moving barrier – 15 km/h
