ThyssenKrupp Steel and JFE Steel Corp. have jointly developed a new multiphase steel for automotive applications. Although the new alloy’s 780-MPa minimum strength is similar to that of previous advanced ultrahigh-strength steels from ThyssenKrupp (CP-W 800) and JFE (NANO 780), it also features up to 40% higher elongation compared with conventional 780-MPa high-strength steel, providing significantly improved formability. The companies have jointly filed a patent on the material, which is designated TP-N 68/78.
The newly developed steel is available as hot-rolled coil, or it can also be coated on request. Typical applications include crash-relevant automotive body structural parts.