3rd Gen AHSS for cold stamping. Named HF1050, the new steel is the first in a series of highly formable (HF) 3rd Gen AHSS grades ArcelorMittal will release in 2017. The tensile strength of the material is approximately 1200 MPa and its ductility is measured as 50% elongation.The new material leads to weight savings of between 10 and 20% in vehicle parts, compared to existing dual phase (DP) grade steels, according to ArcelorMittal. Kia Motors has recently unveiled four new models at the 2017 Geneva International Motor Show, with the main highlight being the world debut of the all-new Kia Picanto, which uses 3rd Gen AHSS.