XABO 890 (minimum yield strength of 890 MPa, or 129 ksi, for thicknesses up to 50 mm, or 2.0 in.) is a quenched and tempered structural steel used for heavy plate products in thicknesses up to 100 mm (3.9 in.) This datasheet provides information on composition, microstructureand tensile properties as well as fracture toughness. It also includes information on forming, heat treating, and joining. Filing Code: SA-784. Producer or source: ThyssenKrupp Steel Europe AG.