ABREX 400 (hardeness target of 400 HBW) is part of a series of Abrex steels that are maintained at very low impurity levels, making them well suited to welding and forming. This datasheet provides information on composition, physical properties, hardness, tensile properties, and bend strength as well as fracture toughness. It also includes information on wear resistance and surface qualities as well as forming, machining, and joining. Filing Code: SA-752. Producer or source: Nippon Steel and Sumitomo Metal Corporation.