Sandvik Bioline 1RK91 (a Sandvik Nanoflex material) is a precipitation-hardening stainless steel grade specifically designed for applications requiring high strength combined with good ductility in the final product, and high formability in the as-delivered condition. The strength is increased after aging of the final product. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as heat treating and surface treatment. Filing Code: SS-908. Producer or source: Sandvik Steel Company.