Cold-rolled and galvannealed (GA) high strength steel sheetsfor automotive cabin structure

JFE Steel has developed and commercialized a series of cold-rolled and galvannealed (GA) high strength steel sheets which are suitable for automotive body structural parts. High strength steels are required a wide variety of strength grades and the superior formability, such as stretch-formability, stretch-flangeability and bendability, which meets a forming method and the shape of forming parts. Adequate spot-weldability and corrosion resistance after painting are also necessary for them. Besides, anti-hydrogen embrittlement property is important especially to those of higher tensile strength grade than 1 180 MPa. JFE Steel's sheet products for automotive body structural parts have met the various demands by optimal material design and precise process control with featured production facilities. Developed cold-rolled and GA high strength steels have been widely applied to great numbers of automotive parts and are expected to serve further weight reduction of car bodies in future.