Mittal Di-Form T500 is a dual-phase steel intended primarily for exposed outer automotive body panels (door, hoods, and fenders). Dual-phase steels are one of the important advanced high-strength steel products developed for the automotive industry. Their microstructure typically consists of a soft ferrite phase with dispersed islands of a hard martensite phase. The martensite phase is substantially stronger than the ferrite phase. The Di-Form grades exhibit low yield-to-tensile strength ratios and the name corresponds to the tensile strength. This datasheet provides information on tensile properties as well as deformation and fatigue. It also includes information on forming and joining. Filing Code: SA-556. Producer or source: Mittal Steel USA Flat Products.